How Druckenmiller Built Natera: A 13F Case Study
From a 1% starter after a short-seller crash to his largest holding: every Duquesne quarter since 2022, lined up against Natera's margin turn
Options Expiration Day: 7 Myths Tested on 28 Years of S&P 500 Data
Is opex really more volatile? Monthly opex is about 10% quieter than a normal Friday, the Monday "vol unclamp" is a myth, and triple witching leans red, but less than SPY charts suggest.
Earnings Gap-Up Review: July 9 – September 25, 2026 (85 Names, 20%+ Gaps)
A beaten-down biotech's comeback from an FDA panel rejection anchors this follow-through study across the heart of summer earnings season.
Market-Wide Gap Report: April–July 2026, Every 15%+ Move Outside Healthcare
349 names across 8 sectors (Technology, Industrials, Financial Services, Consumer Cyclical, Communication Services, Energy, Basic Materials, Consumer Defensive, Real Estate, Utilities) gapped 15%+ in 14 weeks — 217 up, 132 down. Full sector/industry breakdown with earnings-date flags.
Technology Sector Gap Report: April–July 2026, Every 15%+ Move by Industry
102 Technology names gapped 15%+ in 14 weeks — 65 up, 37 down. Full industry breakdown with market cap, valuation, and the confirmed catalyst behind every large-cap move.
Earnings Gap-Up Review: April 9 – July 8, 2026 (58 Names, 20%+ Gaps)
Follow-through ratio analysis — which post-earnings pops kept running, and which round-tripped. Anchored on the BAND trade.