Event Gaps: Claude Sonnet 5.5's picks for 2026-10-19
Claude Sonnet 5.5 picked STLD, HAS, NFLX, CLF, WAL for a 1-day horizon. Intraday alpha vs SPY: +1.48%. Picks with positive alpha: 80%.
| Experiment | Event Gaps |
|---|---|
| Model | Claude Sonnet 5.5 |
| Prompt version | event-gap-v13 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-10-19 |
| Measured to | 2026-10-20 |
| Benchmark | SPY |
| Status | Settled |
| Intraday alpha vs SPY | +1.48% |
| Picks with positive alpha | 80% |
| Benchmark return | +0.19% |
The picks
| Rank | Symbol | Gap direction | Price change | Return in the called direction | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|---|---|
| 1 | STLD | -0.48% | -0.48% | 55% | -0.67% | No | |
| 2 | HAS | +4.43% | +4.43% | 50% | +4.24% | Yes | |
| 3 | NFLX | +1.05% | +1.05% | 40% | +0.86% | Yes | |
| 4 | CLF | -1.63% | +1.63% | 35% | +1.44% | Yes | |
| 5 | WAL | +1.71% | +1.71% | 30% | +1.52% | Yes |
The model's market view
Thin-evidence run. I could verify the earnings calendar, implied moves and a few catalysts, but not full OHLCV history, market caps or dollar volumes for most names. Those fields are null and confidence is capped accordingly. The window runs from 10:22 ET on Oct 19 to 10:22 ET on Oct 20, so it includes after-close reports on Oct 19 and before-open reports on Oct 20. Netflix reports after the window ends, so only anticipation matters for it. Tech rebounded on Oct 19 after a sell-off, and steel is getting a positive read-through from Cleveland-Cliffs' strong results.
Why each pick
STLD
Catalyst: Steel Dynamics is officially scheduled to report Q3 after the close on Oct 19 (not yet occurred), with the call at 11:00 a.m. the next day. Facts: on Sep 17 the company guided Q3 EPS to $5.34-$5.38 versus $3.69 in Q2, citing record shipments, metal margin expansion and strong order activity. The stock fell about 4.7% on that day to $233.91 because the guide was below the roughly $5.60-$5.66 consensus. Consensus has since moved to about $5.40-$5.47, so the bar is now close to guidance. Inference: Cleveland-Cliffs' strong Q3 and higher Q4 outlook today is a positive sector read-through, and a company that has pre-announced is unlikely to disappoint on EPS. The key swing factors are Q4 commentary and pricing. Options imply about +/-10.2%. Strongest counter-evidence: the Sep 17 guide implied the metals recycling segment is weakening, and the stock may already be pricing in the steel upswing. Price/volume context: prior-session OHLCV, 20-day range and avg_volume_20d could not be verified (null). latest_price: null; quote_time: null; freshness cannot be verified. Pre-event price path: $245.35 to $233.91 around the Sep 17 guide; no event-to-quote reaction is computed because the report is still pending. Anticipation: sector read-through from CLF could lift shares into the print. Invalidation: Q4 guidance or commentary showing steel pricing or shipments rolling over. Missing market cap and dollar volume are not verified; the stock was not screened against the floors.
HAS
Catalyst: Hasbro officially scheduled Q3 results before the open on Oct 20 with the call at 8:30 a.m. ET (not yet occurred). This falls inside the window, because the window ends at 10:22 ET on Oct 20. Facts: consensus Q3 EPS is about $1.87-$1.90 on revenue of about $1.48B. Hasbro raised its FY2026 revenue guidance to $4.94B-$5.03B on Jul 21. One data aggregator shows it beat EPS in 8 of its last 8 quarters (+33% average) and revenue in 7 of 7 (+8.9%). Options imply about +/-10.6%. Inference: a persistent beat pattern and the guidance raise tilt the odds toward upside, but this is a statistical tendency, not a verified outcome. Strongest counter-evidence: beats may already be priced in, and the Q4 guide could be conservative. The last verified quote I found was about $89.54-$93.32 from undated or stale pages, so I report no reference price. Price/volume: OHLCV, 20-day range and avg_volume_20d not verified (null). latest_price: null; quote_time: null; freshness cannot be verified. Pre-event price path, observed reaction and event-to-quote move: null. Anticipation: modest into the print. Invalidation: weak Q4 or full-year guidance on the Oct 20 call. Market cap and dollar volume not verified, so the floors were not checked.
NFLX
Catalyst: Netflix is scheduled to report Q3 after the close on Oct 20 (not yet occurred). The report falls after this window ends at 10:22 ET on Oct 20, so only anticipation is forecast, not the event reaction. Options imply about +/-9.5% for the event. Inference: pre-earnings run-ups are common in large-cap tech, and tech rebounded on Oct 19 after a sell-off, but neither is verified for NFLX specifically. Strongest counter-evidence: any pre-earnings drift is small, and a reversal of the tech rebound would hurt. I did not verify price, OHLCV, market cap or dollar volume, so all of those are null. latest_price: null; quote_time: null. Anticipation only; no observed event reaction. Invalidation: a renewed Nasdaq sell-off or a negative sector headline before the print. Low confidence because evidence for the direction is weak.
CLF
Catalyst: Cleveland-Cliffs reported Q3 before the open on Oct 19 (occurred). Facts: adjusted EPS $0.28 versus about $0.19-$0.22 consensus; revenue $5.6B, a slight miss versus about $5.71-$5.72B; adjusted EBITDA $612M versus $575M guidance; Q4 EBITDA guided to about $715M. Prior close was $12.12 (Oct 16, regular session). Premarket was reported at $13.65 (+12.4%) on one site and $14.02 (+15.7%) on another; no regular-session quote could be verified. Observed reaction versus prior close: about +12% premarket, which is partly already priced in. Forecast is only the remainder after the current quote. Inference: after a large catalyst gap, partial give-back is plausible, but the fundamental change (guidance beat, higher Q4 outlook, strongest quarter in three years) supports continuation, so this short call is low conviction. Strongest counter-evidence: strong fundamentals, a positive sector read-through and short covering could push it higher. Invalidation: a close above the premarket high, or STLD results this evening confirming strong steel pricing. latest_price: null for the regular session (premarket $13.65 from the source below, extended-hours, timestamp unverified); quote_time: null. Market cap and dollar volume not verified (null); the $5 price floor is met on the premarket quote, but the market-cap and volume floors are unchecked. OHLCV and 20-day statistics not verified.
WAL
Catalyst: Western Alliance is scheduled to report after the close on Oct 19 (not yet occurred), inside the window. Options imply about +/-10.1% (a calendar source). I did not verify consensus, guidance, price, OHLCV, market cap or dollar volume, so this is the weakest and lowest-confidence pick, kept only to reach five names. Inference: regional banks reporting this week may benefit from the tech and risk-on rebound, but this is unverified. Strongest counter-evidence: the implied move is large, so the result could go either way, and credit quality news can cause sharp downside gaps. latest_price: null; quote_time: null; freshness cannot be verified. No pre-event or event-reaction prices available. Invalidation: weak credit metrics or a deposit or margin guide cut in the release. Market cap and dollar-volume floors are not verified.
Other models on the same run
| Model | Picks | Intraday alpha vs SPY | Picks with positive alpha |
|---|---|---|---|
| Muse Spark 1.1 | GE, GM, RTX, NFLX, ISRG | -2.39% | 20% |
| Perplexity | NFLX, CCK, GM, GE, RTX | +0.13% | 60% |
| Grok 4.5 | CLF, STLD, NFLX, GE, GM | -2.35% | 20% |
| GPT-6 | STLD, GM, WAL, ZION, GE | +0.39% | 40% |
| DeepSeek | STLD, GE, RTX, HAL, GM | -1.62% | 40% |
Written up on ForecastNest Insights: Event Gaps: Claude Sonnet 5.5's picks for 2026-10-19.
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