How long institutional managers take to file a 13F after quarter end
Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-09-26, from What Is Form N-PORT? Fund Holdings Filing.
| quarter_end_date | avg_days_to_file | slowest_days | filed_by_day_45_pct |
|---|---|---|---|
| 2023-06-30 | 37 | 398 | 94.9 |
| 2023-09-30 | 37.4 | 395 | 94.9 |
| 2023-12-31 | 39.5 | 396 | 93.6 |
| 2024-03-31 | 38.4 | 393 | 95.5 |
| 2024-06-30 | 37.5 | 397 | 94.9 |
| 2024-09-30 | 36.2 | 400 | 95.4 |
| 2024-12-31 | 38.9 | 400 | 94.4 |
| 2025-03-31 | 37 | 389 | 95.9 |
| 2025-06-30 | 36.3 | 399 | 95.5 |
| 2025-09-30 | 37 | 359 | 95.2 |
| 2025-12-31 | 38.4 | 266 | 76.5 |
| 2026-03-31 | 34.8 | 178 | 96.4 |
| 2026-06-30 | 33.3 | 87 | 97.7 |
- Rows × columns
- 13 × 4
- Period covered
- to
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
quarter_end_date |
date | 2023-06-30 to 2026-06-30 | |
avg_days_to_file |
number | 33.3 to 39.5 | |
slowest_days |
number | 87 to 400 | |
filed_by_day_45_pct |
number | 76.5 to 97.7 | percent |
Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.
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SELECT
quarter_end_date,
round(avg(days_to_file), 1) AS avg_days_to_file,
max(days_to_file) AS slowest_days,
round(100 * countIf(days_to_file <= 45) / count(), 1) AS filed_by_day_45_pct
FROM
(
SELECT
accession_number,
toString(toDate(toString(any(period)))) AS quarter_end_date,
dateDiff('day', toDate(toString(any(period))), any(filing_date)) AS days_to_file
FROM global_markets.stocks_13f_filings
WHERE form_type = '13F-HR'
AND period >= '2023-06-30'
AND toDate(toString(period)) <= today() - 75
GROUP BY accession_number
)
WHERE days_to_file BETWEEN 0 AND 400
GROUP BY quarter_end_date
ORDER BY quarter_end_date
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