Many of the rankings on Bittery show who holds bitcoin ETFs and treasury-company stock, and they come from Form 13F, the quarterly report large investment managers make to the SEC. This explainer sets out how the form works and, with the SEC’s own filing records, when each quarter’s data actually shows up.
Data as of · 13F-HR filings for the June 30, 2026 period, filed Jul 1 to Aug 31, 2026
| Filing window (2026) | 13F-HR filed | Share of all | Cumulative share | Amendments (13F-HR/A) | Timing |
|---|---|---|---|---|---|
| Jul 1–7 | 192 | 2.2% | 2.2% | 0 | Before the deadline |
| Jul 8–14 | 708 | 8.0% | 10.2% | 3 | Before the deadline |
| Jul 15–21 | 869 | 9.8% | 20.0% | 10 | Before the deadline |
| Jul 22–31 | 1,902 | 21.5% | 41.4% | 21 | Before the deadline |
| Aug 1–7 | 1,379 | 15.6% | 57.0% | 12 | Before the deadline |
| Aug 8–11 | 744 | 8.4% | 65.4% | 7 | Before the deadline |
| Aug 12–13 | 1,148 | 13.0% | 78.4% | 16 | Before the deadline |
| Aug 14 (deadline) | 1,753 | 19.8% | 98.2% | 18 | Deadline day |
| Aug 15–31 | 162 | 1.8% | 100.0% | 56 | After the deadline |
13F-HR filed = original 13F-HR submissions (holdings and combination reports) whose period of report is June 30, 2026, counted by filing date from the SEC’s data set; 8,857 in total.2 Share and cumulative share are of that total. Amendments are 13F-HR/A submissions for the same period. The deadline is 45 days after June 30, 2026.1 Observed counts, not a forecast.
Form 13F is a quarterly report of the stocks and funds a manager holds. The SEC says managers that “exercise investment discretion over $100 million or more in Section 13(f) securities must file Form 13F”.1 Section 13(f) securities are the securities the SEC designates for this report.
Each filing is due “within 45 days after the end of the calendar quarter”.1 For holdings at June 30, 2026, that is August 14, 2026, a date the table marks. So the figures are always at least a month and a half old when the last of them appear.
The SEC’s FAQ separates a holdings report (all of the manager’s Section 13(f) securities are on its form), a combination report (some are on its form and the rest on someone else’s) and a notice (all are on someone else’s, so the filer submits only a cover page).1 The first two are both submitted as type 13F-HR; the notice is 13F-NT.1 Because of combination reports, the same position can be reported by two filers, which is why Bittery’s 13F totals are never described as de-duplicated.
The SEC publishes each period’s filings as downloadable tables. The file covering filings made June 1 to August 31, 2026 holds 8,857 original 13F-HR submissions for the June 30 period, 143 amendments (13F-HR/A) and 1,936 notices (13F-NT).2
Filings come in late and in a rush. Only 192 of the 8,857 were filed in the first week of July, 5,050 (57%) had arrived by August 7, and 1,753 (20%) were filed on the deadline day itself, August 14. 162 more were filed after the deadline, along with 56 of the 143 amendments.2
Bittery’s holder rankings, such as the largest IBIT holders and institutions’ bitcoin ETF and stock holdings, use holdings at June 30, 2026 from filings made through August 31. Holdings at September 30 are due within 45 days of that date, so the next set will be read once most of them are in.1
SUBMISSION (submission type, filing date and period of report), counted by Bittery, retrieved 2026-11-05.For information only. Not financial advice. See the terms of use.