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Public ownership evidence

Hydrofarm Holdings Group, Inc. Common Stock (HYFM) Ownership Disclosures

Read HYFM insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-292006-10-27O'Brien Kevin PatrickA55,248Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2006-10-27 and its public availability date is 2026-10-29. Subtracting those calendar dates gives 7307 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001437749-26-034003 ↗SEC 0001437749-26-034003 ↗SEC 0001437749-26-034002 ↗

Recent Form 4 activity

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2026-10-292006-10-27O'Brien Kevin PatrickA55,248Not reported
2026-10-292026-10-27O'Brien Kevin PatrickA55,248Not reported
2026-10-292026-10-27PARKER MARK SP22,099Not reported
2026-10-292026-10-27PARKER MARK SP22,099Not reported
2026-10-292026-10-27Toler William DouglasA55,248Not reported
2026-10-292026-10-27Toler William DouglasA55,248Not reported
2026-10-292026-10-27Yetter Richard ChristopherA138,121Not reported
2026-10-292026-10-27Yetter Richard ChristopherA138,121Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 22 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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OSAIC HOLDINGS, INC.2026-06-302026-08-15503$426None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1510,613$9,018None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-1575$59None
CITADEL ADVISORS LLC2026-06-302026-08-1523,985$20,380None
GROUP ONE TRADING LLC2026-06-302026-08-15338$287None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-1439,683$33,731None
Vanguard Global Advisers, LLC2026-06-302026-08-141,269$1,079None
UBS Group AG2026-06-302026-08-141,898$1,613None
UBS Group AG2026-06-302026-08-1413$11None
UBS Group AG2026-06-302026-08-142,128$1,809None
UBS Group AG2026-06-302026-08-14292$248None
Virtu Financial LLC2026-06-302026-08-1414,696$12,000None
BNP PARIBAS FINANCIAL MARKETS2026-06-302026-08-14198$168None
RENAISSANCE TECHNOLOGIES LLC2026-06-302026-08-1470,363$59,788None
VANGUARD FIDUCIARY TRUST CO2026-06-302026-08-1418,082$15,370None
MORGAN STANLEY2026-06-302026-08-149$8None
MORGAN STANLEY2026-06-302026-08-1481$69None
Compass Ion Advisors, LLC2026-06-302026-08-1310,753$9,137None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-132,717$2,308None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-1330,941$26,300None
Tower Research Capital LLC (TRC)2026-06-302026-08-125,439$4,622None
Hurley Capital, LLC2026-06-302026-08-11103$88None

90-day public filing window, up to 50 source positions.

OSAIC HOLDINGS, INC. ↗SUSQUEHANNA INTERNATIONAL GROUP, LLP ↗JONES FINANCIAL COMPANIES LLLP ↗CITADEL ADVISORS LLC ↗GROUP ONE TRADING LLC ↗VANGUARD CAPITAL MANAGEMENT LLC ↗Vanguard Global Advisers, LLC ↗UBS Group AG ↗UBS Group AG ↗UBS Group AG ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.