box office long tail drift
What it checks
When a movie has unusually strong "legs" in its second weekend (holding 70%+ of opening), the studio's stock drifts up over the next 2-4 weeks as analysts revise total-revenue estimates higher.
Mechanism
Opening-weekend gross gets all the headlines but week-2/3 hold (W2_gross/W1_gross) is what actually predicts theatrical total — and therefore home-video / streaming licensing revenue 2-4 quarters out. A strong-legs release (W2/W1 > 0.7) is rare and underpriced because the news cycle has moved on by the time W2 numbers print Sunday night.
Signal rule
Per ticker: per-release hold = W2_gross/W1_gross; surprise_z vs trailing-12 hold-rates per distributor; fire +1 LONG when hold>0.7 AND z>+1.0σ; 10/20d holds; lag-1 trading day for no-look-ahead.
Data dependencies
daily_pricesAdjusted-close OHLCV for every US-listed ticker; primary price feed.
box_office_dailyWorker data table — see services/worker schema.
box_office_distributor_ticker_mapWorker data table — see services/worker schema.
Expected edge
- Paper alpha
- untested — internal
- Paper window
- T+0 to T+20d
Untested — internal. Target 40-100 bps per qualifying release; ~8-15 qualifying strong-legs weekends per distributor per year.
Example tickers where this is likely to fire
Illustrative only — the signal fires based on the live data, not a fixed list.
Related families
box office opening driftEvent-drivenOpening-weekend grosses are still the single most-watched data point for the major US-listed studios. A weekend-gross surprise vs the rolling-12-release per-distributor baseline drives a measurable Monday-open drift in the distributor's equity that persists ~10 trading days before being fully absorbed.
box office holiday window alphaEvent-drivenThanksgiving, Christmas, Memorial Day, and July-4 weekends are the four-tentpole release windows where studios bid for the biggest theatrical revenue of the year. A distributor that outperforms its non-holiday baseline during a tentpole window has disproportionately captured the year's marquee revenue and the equity drifts up 10d post-window as trade press digests final tallies.
peadEventPost-Earnings Announcement Drift (Bernard-Thomas 1989): buy after an earnings surprise greater than 1σ, hold 30-60 days. Surprise is computed as (actual − consensus) / |consensus|, with σ taken from a trailing expanding window so prior thresholds don't leak future variance.
Explore box office long tail drift on alphactor.ai
See which tickers this family is currently firing on, with live signals and rankings.