BA - Educational Analysis * US Equities
Educational Analysis * US Equities

BA

Earnings behavior, post-earnings drift, and the gap between consensus and the market's real expectation - the educational primer before you look at the institutional verdict.

Educational content only - not investment advice. Nothing on this page is a recommendation to buy or sell any security. Historical patterns do not predict future outcomes. Consult a licensed financial advisor before making any trading decision.
Published byGamma QC editorial
TickerBA
CategoryEducational primer
Last reviewedJuly 20, 2026
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Historical Earnings Track Record: The Beat-Rate vs. Drift Disconnect

Boeing’s earnings history over the last eight reported quarters shows a 50% beat rate — four beats and four misses — with an average earnings surprise of 267.4%. That headline surprise figure looks dramatic, but it does not translate into predictable upside price action. Across those same eight quarters, the average five-day price move after earnings was -3.94%, classified as a “down” drift.

The real disconnect shows up in the most recent prints. On January 27, 2026, Boeing reported actual EPS of $9.92 against an estimate of -$0.43854, a 2,362.1% positive surprise and a clear beat — yet the stock fell 1.21% the next day and dropped 4.67% over the following five sessions. On April 22, 2026, actual EPS came in at -$0.20 versus an estimate of -$0.68493, a 70.8% beat; the stock rose 1.24% the next day but still drifted 3.1% lower over the next five trading days. Even the smaller July 29, 2025 beat — actual EPS -$1.24 versus estimate -$1.4, an 11.4% surprise — produced a next-day decline of 0.11% and a five-day drift of -0.54%. The notable exception in the last four quarters was the October 29, 2025 miss, where actual EPS of -$7.47 versus estimate -$5.16 (-44.8% surprise) drove a 6.32% next-day drop and a 7.47% five-day decline.

Options-Flow Dynamics Around the July 28 Report

Boeing next reports earnings on July 28, 2026, before the market open, with a consensus EPS estimate of -$0.27. As of the July 20 snapshot, the stock traded at $214.03, below its 50-day EMA of $221.22, with an RSI of 42.8. Heading into the print, options flow typically reflects the market’s real expectation for the magnitude of the move, not just the direction of the EPS number.

Given that the average post-earnings drift over the prior eight quarters was -3.94%, straddle pricing and implied volatility can become particularly informative. If one-sided directional flow has pushed implied volatility higher, the post-earnings volatility crush can be severe — especially if the actual move fails to match the premium built into the options. Traders often compare the implied move priced into the options chain against the historical 3.94% five-day drift to gauge whether expectations have drifted above or below the stock’s recent earnings behavior.

What a Disciplined Trader Watches Given This Pattern

The 50% beat rate and negative average drift suggest that headline EPS beats have not produced reliable follow-through for Boeing. A disciplined approach focuses on price action and context rather than the binary beat-or-miss label. Watch where the stock closes relative to the 50-day EMA at $221.22 and whether the RSI near 42.8 reflects a neutral-to-weak setup into the event. Also watch whether any post-earnings gap is reversed in the first hour or first day, since the last two beats both produced negative five-day drifts.

Other catalysts beyond EPS — such as free-cash-flow commentary, delivery guidance, and production-rate updates — often drive the real re-rating. The October 2025 miss showed that misses can accelerate the downside, while the January 2026 beat showed that even a massive positive surprise can be sold. For a deeper dive into how institutional models, analyst revisions, and aggregate positioning align with this data, read the full institutional verdict on Boeing.

Real Data - Gamma QC Earnings IntelligenceAs of Jul 20, 2026
50%Beat rate, last 8Q
267.4%Avg EPS surprise
-3.94%Avg 5-day move after earnings
2026-07-28Next earnings
ReportedActualEstimateSurprise1D Move5D Move
2026-04-22$-0.2$-0.68493+70.8%+1.24%-3.1%
2026-01-27$9.92$-0.43854+2362.1%-1.21%-4.67%
2025-10-29$-7.47$-5.16-44.8%-6.32%-7.47%
2025-07-29$-1.24$-1.4+11.4%-0.11%-0.54%
2025-04-23$-0.49$-1.17+58.1%--
2025-01-28$-5.9$-1.6-268.8%--
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