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 2026-08-22, from What Is Form N-PORT? Fund Holdings Filing.

Rows × columns

12 × 4

Period covered

2023-06-30 to 2026-03-31

Computed

2026-08-22

Completeness

No missing values

Source

US exchange, SIP and OPRA market data

Licence

Strasmore terms · free, no signup

Formats

JSON · CSV · the SQL below

What each column holds

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 2026-08-22, and the query below is what returned them.

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