Deep Dives
2026-07-04
The Quarter-End That Didn't File: an EDGAR Index Gap
Both 2026 quarter-end days are nearly empty in the SEC filing index — dozens of filings where thousands belong. The receipts, and what they understate.
Strasmore Research
Educational explainers, recurring market-structure breakdowns, and historical deep-dives — every number sourced from a stored query against real market data.
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2026-07-04
Why Short Interest Data Is Always Two Weeks Old
Short interest is measured twice a month and published 10-45 days later. The receipts: ten settlements, their arrival dates, and the missing June print.
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2026-07-04
Market Holidays and Early Closes: Verify, Don't Assume
Ten US market holidays a year, a few 1pm early closes, and weekend-shift rules — verified from calendar AND tape, with July 3, 2026 as the worked example.