This is ForecastNest’s 1 day forecast for GOOG, created 2026-09-18 14:43 UTC. The window closed 2026-09-21 14:43 UTC, when GOOG closed at $352.40, up 1.4% from $347.57 when the forecast was made. It traded between $343.87 and $353.30 along the way (-1.1% to +1.6%).
Prediction window: Equity / ETF 1D: the stored target below is authoritative; it may be a session close or an intraday instant.
Prediction time: 2026-09-18 14:43 UTC (9/18/2026, 10:43:10 AM EDT).
Valid until: 2026-09-21 14:43 UTC (9/21/2026, 10:43:10 AM EDT). Target session: 2026-09-21 (New York); During session. Lead time to expiry: 72 elapsed hours. Timing: Regular session. Based on stored prediction time, not verified model execution time.
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5 of the 6 models called a direction, and 5 of those calls were right. Each model is also asked to find the price it was forecasting from when it answers, shown as the dashed line inside its box in the picture below. All models except GPT-5.6 Sol, Claude Opus 5, and DeepSeek V3 found it accurately.
Below are the details.
| Model | Range | Move | Confidence | Price it found | Score | Result |
|---|---|---|---|---|---|---|
| GPT-5.6 Sol | $343.50–$360.50 | -2.2% to +2.7% | 58% | $351.09 | 79.6 | right |
| Claude Opus 5 | $344.60–$360.10 | -2.1% to +2.3% | 54% | $352.00 | 41.5 | no call |
| Muse Spark 1.1 | $341.00–$355.00 | -1.9% to +2.2% | 55% | $347.44 | 80.1 | right |
| Grok 4.5 | $345.00–$358.00 | -1.7% to +2.0% | 42% | $351.00 | 78.8 | right |
| Gemini 1.5 Pro | $342.00–$355.00 | -1.6% to +2.2% | 70% | $347.43 | 82.2 | right |
| DeepSeek V3 | $348.50–$357.50 | -1.0% to +1.6% | 60% | $352.00 | 64.0 | right |
How these models have done on GOOG over 1 day
This forecast is settled and is included in the statistics below. The remaining records are forecasts created before 2026-09-18 14:43 UTC. Only settled directional calls count toward accuracy.
| Model | Asked | Still open | No call | Called up | Called down | Right |
|---|---|---|---|---|---|---|
| GPT-5.6 Sol | 2 | — | 1 | 1 · 1 right | — | 100% (1/1) |
| Muse Spark 1.1 | 2 | — | 1 | 1 · 1 right | — | 100% (1/1) |
| Grok 4.5 | 1 | — | 0 | 1 · 1 right | — | 100% (1/1) |
| Gemini 1.5 Pro | 2 | — | 1 | 1 · 1 right | — | 100% (1/1) |
| DeepSeek V3 | 2 | — | 1 | 1 · 1 right | — | 100% (1/1) |
| Claude Opus 5 | 2 | — | 2 | — | — | — |
Every published GOOG forecast over 1 day before this question was asked, on 2026-09-18 14:43 UTC, plus this settled forecast. Forecasts created after this question are excluded. Results reflect the settlements available when this article is generated. A day-ahead call and a week-ahead one are counted separately — they are different questions. Only settled forecasts are graded, so open + no call + up + down adds up to asked. “No call” is a range too centred on the price to be pointing anywhere. Accuracy counts only forecasts that have settled, and the count behind it is shown beside it — a single right call is not a 100% record.
What each model said
GPT-5.6 Sol
Result: right
View full reasoning
(1) What I found: The freshest GOOG quote I could verify was $351.09 in September 18 premarket trading, versus the September 17 regular-session close of $343.68. Public.com separately showed GOOG at $351.64 earlier in premarket trading, confirming that Alphabet entered Friday roughly 2% above the prior close. Because I could not independently verify a U.S. regular-session GOOG trade at or after the requested 14:43 UTC baseline, I classify data_access as partial rather than live. Sources: [https://ca.investing.com/equities/google-inc-c](https://ca.investing.com/equities/google-inc-c) and [https://public.com/stocks/goog/pre-market
(2)](https://public.com/stocks/goog/pre-market
%282%29) Market regime: GOOG is showing stronger relative momentum than the broad market as investors rotate back toward large-cap AI and cloud names. Reuters reported that the S&P 500 and Nasdaq opened modestly higher on September 18 as lower oil prices offset pressure from rising Treasury yields, while Alphabet was among the AI-linked stocks gaining in premarket trading. Alphabet's recent price structure is also constructive: GOOG rose 1.27% on September 17 after recovering sharply from its September 9 low area, although it remains below its 52-week high. Sources: [https://www.reuters.com/business/nasdaq-futures-lead-wall-st-gains-oil-retreat-eases-inflation-worries-2026-09-18/](https://www.reuters.com/business/nasdaq-futures-lead-wall-st-gains-oil-retreat-eases-inflation-worries-2026-09-18/) and [https://www.marketbeat.com/stocks/NASDAQ/GOOG/chart/
(3)](https://www.marketbeat.com/stocks/NASDAQ/GOOG/chart/
%283%29) Price range: I use $343.50-$360.50 for the next one-day window. The lower bound is near the September 17 close and allows Friday's gap to be fully retraced if Treasury yields rise further. The upper bound allows approximately 2.7% upside from the verified $351.09 quote, consistent with recent GOOG daily ranges and the current AI-sector rebound. GOOG traded between $340.50 and $345.97 on September 17, while September 14 ranged from $338.74 to $346.45, so a several-dollar daily swing is normal in the current regime. Source: [https://www.marketbeat.com/stocks/NASDAQ/GOOG/chart/
(4)](https://www.marketbeat.com/stocks/NASDAQ/GOOG/chart/
%284%29) Catalysts inside the window: Alphabet's strongest fundamental support remains Google Cloud and AI infrastructure. MarketWatch reported that Alphabet is emphasizing cloud monetization rather than pursuing model leadership at any cost, with more than half of Alphabet's machine-learning compute expected to support cloud services in 2026. That strategy gives Alphabet exposure to industry-wide AI demand through TPUs, cloud infrastructure and enterprise services. The immediate macro catalyst is the 10-year Treasury yield approaching 5%, which can pressure large-cap technology valuations if it rises further. Sources: [https://www.marketwatch.com/story/google-is-playing-a-different-ai-game-than-everyone-else-and-wall-street-may-be-missing-the-point-e91077a3](https://www.marketwatch.com/story/google-is-playing-a-different-ai-game-than-everyone-else-and-wall-street-may-be-missing-the-point-e91077a3) and [https://www.reuters.com/commentary/reuters-open-interest/global-markets-view-usa-2026-09-18/
(5)](https://www.reuters.com/commentary/reuters-open-interest/global-markets-view-usa-2026-09-18/
%285%29) Strongest counter-argument: The bearish case is that Friday's approximately 2% premarket jump already prices in much of the renewed AI optimism while the macro environment remains restrictive. The Federal Reserve has raised its target range to 3.75%-4.00%, Treasury yields remain near 5%, and Alphabet still faces regulatory and competitive uncertainty around search, advertising and generative AI. A sustained return below roughly $344-$346 would suggest the current breakout attempt has failed, while persistence above roughly $354-$356 would indicate that the market is accepting a higher near-term valuation range. Sources: [https://www.reuters.com/markets/wealth/fed-builds-credibility-hawkish-turn-leaves-investors-edgy-2026-09-17/](https://www.reuters.com/markets/wealth/fed-builds-credibility-hawkish-turn-leaves-investors-edgy-2026-09-17/) and [https://www.reuters.com/business/google-shakes-up-ai-leadership-deepmind-chief-shifts-role-2026-08-05/
(6)](https://www.reuters.com/business/google-shakes-up-ai-leadership-deepmind-chief-shifts-role-2026-08-05/
%286%29) Confidence: 58% reflects a modest positive edge rather than a strong directional forecast. Alphabet's Friday gap, recent relative strength, cloud monetization narrative and renewed demand for large-cap AI exposure support MILD BULLISH through one day. Confidence remains limited because my freshest verified GOOG price is premarket rather than contemporaneous with the requested baseline, Treasury yields are still a significant valuation headwind, and one-session outcomes remain highly sensitive to broad-market rate moves.
Claude Opus 5
Result: no call
View full reasoning
(1) What I found, and where, with one class distinction that matters: Robinhood shows GOOG, the Class C shares, priced at $352.00 during the 2026-09-18 session with a daily high of $352.90 and a low of $351.21, a market capitalisation of $4.23 trillion and a P/E of 17.05, on volume of just 611,700 against a 15.53 million average, which confirms this is very early session data (robinhood.com/us/en/stocks/GOOG/). For the prior session, Zacks coverage carried on Yahoo reports the A shares ended 17 September at $347.33, up 1.3%, outpacing the S&P 500's 1.14% gain, with the Nasdaq up 1.69% (finance.yahoo.com/markets/stocks/articles/alphabet-googl-rises-higher-market-214503770.html). CNBC's GOOGL page gives a previous close of $342.87 with a session range of $343.89 to $349.50, which reconciles: $342.87 was Wednesday's close, not Thursday's, contrary to one wire summary I found. I anchor GOOG at $352.00, so the Class C shares are up roughly 1.9% today. My quote predates the 14:43 UTC baseline by a short margin, so data_access is 'partial'.
(2) Market regime: a mega-cap breaking out of a months-long correction on a cluster of genuinely positive news. Two target raises landed within a day: Evercore's Mark Mahaney reiterated Buy and lifted his target to $450 from $420, citing Google's clear Search leadership, and Tigress Financial went to $485 from $415. The regulatory picture also improved rather than worsened, with Reuters reporting a judge saying Google should relax its ad-tech rules, a materially lighter read than the monitor-ordered framing that circulated the day before. Operationally, coverage notes nearly 90% of the Fortune 100 now use Gemini Enterprise, with enterprise AI sales helping drive Google Cloud revenue up 82% in the second quarter. Alphabet had been in a correction since May, down 0.54% over the past month while the S&P fell 2.85%, so it was already outperforming on relative terms before this week.
(3) Price range: anchored at $352.00 with a modest upside tilt. Beta is 1.21 and recent full-day ranges have run near 2%, with Thursday's Class C session spanning $337.45 to $344.70. I am using a daily sigma near 1.8%, giving about -2.1% to +2.3%, or $344.60 to $360.10. The levels: $344.70 was Thursday's high and now becomes the first support beneath, with $337.45 below that; overhead there is little recent structure until the correction highs, and the 52-week high of $404.47 set on 18 May sits far above. The skew reflects that price has just cleared a multi-week ceiling on real news rather than drift.
(4) Catalysts inside the window: no scheduled company events. Alphabet reports on 27 October, and the 4 September ex-dividend date has passed, so with equities shut from 16:00 ET today Friday's close effectively determines this window. The dominant feature is mechanical: today is September triple witching, with more than $1 trillion of notional in options and futures expiring at once. Alphabet is a heavy index constituent and carries a large single-stock options market, so pinning and dealer hedging can override news entirely into the final hour, and TheStreet Pro's James DePorre notes this is mechanical action rather than a shift in the fundamental view. Further ad-tech remedy reporting is the live headline risk.
(5) Strongest counter-argument: I am buying strength into an expiry, which is the weakest moment to do it, and roughly 1.9% of today's move is already inside my anchor, so the call requires continuation rather than the initial repricing. The ad-tech situation is not resolved, only better framed, and remedy headlines have repeatedly capped Alphabet rallies over the past two years. GuruFocus flagged the stock as modestly above its intrinsic value estimate at these levels, and the AI capital expenditure that drives the Cloud numbers is the same spending investors were questioning on Monday. A close back below $344.70 would invalidate the lean; holding above $352 into the bell would confirm it.
(6) Why 54%: the anchor is the freshest and most direct I have in this set, a named intraday quote with a session range rather than a derived level, so I have real confidence in the starting point. The direction is a genuine but modest lean. The news supporting it is specific, dated and multi-sourced, which is more than I usually have; what holds the number down is the triple-witching close, where expiring open interest rather than analysis sets the final print, and the fact that the easy part of the move has already happened.
Muse Spark 1.1
Result: right
View full reasoning
(1) What you found, and where: Finnhub reports GOOG Current $347.44 Open $351.22 High $355.13 Low $345.63 Previous Close $343.68 Change +3.76 +1.094% Sep 18. 5-day +2.47% 1-month +1.14% 6-month +15.25% YTD +10.72% 1-year +43.94% beta 1.21 per Finnhub. Ad-hoc-news Sep 18 price $341.74 market cap $4.18T 52-week high $404.47 low $236.68. SPY close Sep 17 $762.57 per MacroTrends all-time high $777.88 Aug 13.
(2) The current market regime as you read it: Rebound post-hike. Fed hike Sep 16 12-0 to 3.75-4.00% first since July 2023. GOOG +1.09% Sep 18 outperforming NVDA -0.06% flat and XLF -0.48% financials. Analysts piling on buy calls per ad-hoc-news. Cloud/AI monetization resilient. Regime mildly bullish for megacap growth vs SPY $762.57 +1.1% Sep 17.
(3) Price range justification, with the levels and volatility you are using: Anchored to $347.44 live Sep 18. Using day range $345.63-$355.13 and $343.68 previous close. Beta 1.21 implies daily ~1.5% ~$5.2. Lower $341 near $341.74 Sep 18 ad-hoc and -1.8% if profit taking, upper $355 near $355.13 high +2.1% captures extension toward $404.47 high. Slight upside skew due to +1.09% momentum and buy calls.
(4) Scheduled or likely catalysts inside the window: Window Sep 18 14:43 UTC 24h covers Sep 18-19 quad witching. No GOOG earnings. Warsh comments after hike and October Fed meeting focus per CoinDesk. GOOGL search AI updates.
(5) The strongest counter-argument, and what would invalidate your call: Bear case: hawkish Warsh guiding more hikes and 2-year 4.348% per Kitco could push GOOG back to $345.63 low if ad spend concerns. Bull case: dovish hold and AI news could squeeze to $355 high. Invalidation: close below $339 or above $357 would negate mild bullish.
(6) Why your confidence is the number it is: Confidence 55% reflects live price $347.44 dated Sep 18 after baseline with high $355.13 low $345.63 same day and previous close $343.68, plus $341.74 ad-hoc corroboration, but post-hike quad witching noisy. Labeling live because quote is same-day after window start.
Grok 4.5
Result: right
View full reasoning
(1) What you found, and where: Live quotes from StockAnalysis ($347.46 earlier), Onvista ($351.65), CoinGlass ($350.48), Motley Fool ($352.81) and Investing.com show GOOG trading near $349-$353 as of mid-morning September 18 2026 EDT, up roughly 1.5-2.5% from the prior close of $343.68. Day range so far extends from about $348.67-$355.13 after a +1.27% session on September 17.
(2) The current market regime as you read it: GOOG sits in the middle of its 52-week range (high $404.47, low $236.69) within a broader multi-month recovery. Recent sessions show a rebound from mid-September lows near $330-$337, supported by continued AI and cloud narrative strength alongside large-cap tech resilience.
(3) Price range justification, with the levels and volatility you are using: Anchored to the observed ~$351 quote. Recent daily ranges of $5-$10 and realized volatility near 30% annualized support a one-day envelope of roughly ±1.5-2% around the current level, producing the $345-$358 band. The range is modestly skewed higher to reflect the ongoing session gains while allowing room for a partial fade.
(4) Scheduled or likely catalysts inside the window: No major company-specific catalysts for the remaining session; residual flows around AI infrastructure commentary and broader market reaction to yields remain the primary near-term drivers. Next earnings are estimated for late October.
(5) The strongest counter-argument, and what would invalidate your call: A decisive break below the recent $345-$348 support cluster on rising volume would invalidate the mild short-term bias and open a retest of the $340 area. Conversely, a sustained push through $355-$358 would strengthen the rebound case beyond the mild bullish stance.
(6) Why your confidence is the number it is: Confidence is modest at 42% because the one-day horizon is dominated by noise within a consolidating recovery, quote dispersion across sources is several points, and no high-conviction catalyst is present to override the mixed technical picture.
Gemini 1.5 Pro
Result: right
View full reasoning
(1) Data sources: I retrieved live market data showing Alphabet Inc. (GOOG) trading near $347.43 as of 10:40 AM EDT on September 18, 2026.
(2) The current market regime as you read it: The broader market is in a distinct post-FOMC risk-on phase. With the Federal Reserve's rate decision digested and initial jobless claims alleviating hard landing fears, mega-cap technology and AI-related equities are catching a strong bid as capital rotates back into growth leaders.
(3) Price range justification, with the levels and volatility you are using: I project a 24-hour range of $342.00-$355.00. GOOG gapped up at the open to an intraday high of $355.13 before retracing toward the $347 level. Support is firmly established in the $342 to $343 zone, which aligns with yesterday's close of $343.68. If the broader tech rally sustains momentum, a retest of the morning highs near $355 is highly probable.
(4) Scheduled or likely catalysts inside the window: Price action over the next 24 hours will primarily be driven by standard Friday options expiration (OpEx) dynamics, which typically injects elevated intraday volatility, alongside institutional portfolio repositioning ahead of the weekend.
(5) The strongest counter-argument, and what would invalidate your call: The primary risk to this bullish setup is the potential for aggressive Friday afternoon profit-taking following the recent tech-led bounce. If macroeconomic anxieties resurface, GOOG could easily reverse course, fill the morning gap, and break below the $342 support level.
(6) Why your confidence is the number it is: My confidence is 70%. While Alphabet benefits from robust underlying AI fundamentals and a supportive macroeconomic relief rally, the inherent volatility associated with options expiration warrants a measured degree of short-term caution.
DeepSeek V3
Result: right
View full reasoning
(1) Price discovery: I found GOOG trading around $352 at the window start, based on an Investing.com pre-market quote of $352.72 (+2.63%), a Moomoo intraday quote of $347.105 at 10:16 a.m. ET, a Raymond James quote of $351.17 (+7.49) at 9:50 a.m. ET, and a 24h.jrj report of $355.12 (+3.33%) after the open. The prior session close was $343.68 (+1.27%) on September 17, per Yahoo Finance UK.
(2) Market regime: The stock is in a sharp short-term recovery after bouncing from the $330 area earlier this month. A federal judge ruled on September 16 that Google must improve ad-tech compatibility with competitors but did not order a business breakup, and capped the remedy period at six years, which removed a major overhang. Evercore raised its projected level to $450 on September 17, citing Search survey strength, and Tigress Financial raised its target to a street-high $485 on September 18. Google Cloud grew 82% year over year in Q2 2026.
(3) Price range: I used the recent swing low near $330 and the intraday breakout above $350 as structural anchors. The $350-$355 zone has transitioned from resistance to support, while $358-$360 is the next major hurdle identified by Traders Union on September 18. On the downside, $345-$348 is the first support shelf, with deeper support at $340. I expect a one-day range of $348.50-$357.50, with volatility elevated due to quadruple witching.
(4) Catalysts: September 18 is quadruple witching, with stock index futures, stock index options, individual stock options, and single stock futures all expiring. This can produce mechanical flows, price pinning around large strikes, and sharp intraday reversals. No other major scheduled company-specific catalysts are inside the window; earnings are estimated for October 28, 2026.
(5) Counter-argument: The strongest counter-argument is that GOOG has already run roughly 6% from its September low and is approaching the $358-$360 resistance zone, where some options traders are selling upside calls. The options market shows a defensive put buy at the $330 strike alongside bullish call spreads, indicating mixed positioning. A sustained break below $348 would invalidate the short-term bullish bias and likely bring $340 into play.
(6) Confidence: I set confidence at 60% because the short-term direction is genuinely two-sided. The analyst upgrades, ad-tech legal relief, and Cloud growth support a constructive view, but quadruple witching introduces mechanical noise that can overwhelm fundamentals, and the stock is at resistance rather than in a clear trend. The one-day forecast is closer to a coin flip than a high-conviction call.
Read this comparison on ForecastNest, where it stays up to date if a score is ever recomputed.
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