overnight drift: short GOOGL at close, exit next close (regulatory: Google Could Face $3.2B In Damages Over Ad-Tech Monopoly, Federal Judge Rules) [skipped at close: outranked — mat 71 short lost to mat 82 long (decision 24556) for S4 GOOGL exiting 2026-10-02]
Signal was directionally right but marginal: GOOGL drifted from 339.05 to 338.26 (-0.23%) after the short, and the worst unrealized was only -0.04%, so the bearish call held. Timing is the dominant factor — the stock was already down 1.49% from the 344.20 prev close at decision time with the last 30m flat (+0.18%), so most of the regulatory repricing had happened before entry and the remaining move was tiny. Exit captured nearly all of what was available (+0.23% realized vs +0.26% best unrealized), so execution wasn't the problem; the trade simply had little left to harvest.
📖 Glossary
S1 primary — trades the alert's primary ticker in the direction the article itself indicates; exits at the same day's close.
S2 counterparty — trades the inferred counterparty ticker (weakest signal, LLM-inferred sympathy); exits at the same day's close.
S3 peer — trades an inferred peer ticker (also LLM-inferred sympathy); exits at the same day's close.
S4 overnight — holds the primary ticker from today's close to the NEXT day's close.
Verdicts are decided top-to-bottom, first match wins; REPRICING is also the fallback when nothing else matches (2026-08-08 #220).
UNKNOWN — a needed price input (move since close or move in the last 30m) is missing.
PRICED — |move since previous close| ≥ 2.0%: already reflected in price.
REPRICING — |move in the last 30m| ≥ 0.5%: the tape is actively moving on it. Also covers a quieter move — |move since previous close| in [1.0, 2.0) with a quiet last-30m tape: still developing, not yet priced.
FRESH — |move since previous close| < 1.0%: a genuinely new move.
materiality — how market-moving the story was judged, 0-100 — alerts require materiality ≥ 70.