HYFM

Hydrofarm Holdings Group Inc Cross-source read
IndustrialsCUSIP 44888K407

Among active 13F managers last quarter, 4 opened and 2 reduced; the largest holder to move was Renaissance Technologies LLC (−0.4%). No open-market insider trades in the last 180 days.

Tracked 13F holders
21
5 in Q2 2026 filings
13F value (tracked)
$257K
Smart-money readBullish
Net sellingNet buying
Funds · active managers, latest 13F
4 adding · 2 trimming
Insiders · Form 4 open-market, 180d
0 buying · 0 selling
US House · STOCK Act, 180d
0 buying · 0 selling

Funds lean in and no leg opposes.

Who owns HYFM?

21 tracked 13F filers · ranked by shares held

21 tracked 13F filers disclose a position in HYFM as of the latest SEC 13F filings, a combined $257K in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1Renaissance Technologies LLC72K
$74K
−0.4%
Reduced · −300 sh
Q1 2026
2BlackRock, Inc.50K
$43K
Held
Q2 2026
3Vanguard Capital Management LLC40K
$34K
Held
Q2 2026
4Geode Capital Management, LLC34K
$29K
−46%
Reduced · −29K sh
Q2 2026
5Citadel Advisors LLC24K
$20K
New
+24K sh
Q2 2026
6Vanguard Fiduciary Trust Co18K
$15K
Held
Q2 2026
7State Street Corp16K
$14K
Held
Q2 2026
8XTX Topco Ltd12K
$12K
New
+12K sh
Q1 2026
9Compass Ion Advisors, LLC11K
$9K
New
+11K sh
Q2 2026
10Tower Research Capital LLC (TRC)3K
$3K
−18%
Reduced · −652 sh
Q1 2026
11JNBA Financial Advisors2K
$2K
Held
Q2 2026
12Vanguard Global Advisers, LLC1K
$1K
Held
Q2 2026
13UBS Group AG962
$981
−80%
Reduced · −4K sh
Q1 2026
14Group One Trading LLC338
$287
Held
Q2 2026
15BNP Paribas Financial Markets228
$233
+11%
Added · +23 sh
Q1 2026
16Osaic Holdings, Inc.221
$224
−12%
Reduced · −30 sh
Q1 2026
17Hurley Capital, LLC103
$88
Held
Q2 2026
18Morgan Stanley90
$92
−66%
Reduced · −171 sh
Q1 2026
19Jones Financial Companies LLLP75
$76
−2.6%
Reduced · −2 sh
Q1 2026
20Royal Bank Of Canada8
$0
Held
Q1 2026
21Advisory Services Network, LLC7
$7
New
+7 sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is HYFM being bought or sold by institutions?

Last quarter, 4 funds opened a new position in HYFM, while 2 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
4
funds took a first position
Reduced
2
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own HYFM also own

CompanyCo-held byTheir position there
Apple IncAAPL7 funds$3.2B
Nvidia CorpNVDA7 funds$3.1B
Microsoft CorpMSFT7 funds$1.6B
Micron Technology IncMU7 funds$1.5B
Broadcom IncAVGO7 funds$1.5B
Alphabet Inc-CL AGOOGL7 funds$1.4B
Eli Lilly & CoLLY7 funds$1.3B
Chevron CorpCVX7 funds$1.1B
Alphabet Inc-CL CGOOG7 funds$1.0B
JPMorgan Chase & CoJPM7 funds$1.0B
Advanced Micro DevicesAMD7 funds$1.0B
Intel CorpINTC7 funds$935.7M

Ranked by how many of HYFM's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in HYFM.

Insider activity (Form 4)

Full insider page →
Net · 180d
$0
0 open-market transactions
DateInsiderRoleActionSharesValue
Jan 6, 2026O'Brien Kevin PatrickChief Financial OfficerSell (S)1K$2K
Dec 5, 2025Denis MelisaDirectorSell (S)120$230
Dec 4, 2025Denis MelisaDirectorSell (S)3K$5K
Aug 28, 2024Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)100K$50K
May 16, 2023Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)15K$16K
May 15, 2023Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)35K$38K
Aug 12, 2022Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)
3 lots, same day
25K$93K
Mar 16, 2022Fitch TerencePresidentSell (S)4K$51K
Mar 15, 2022Fitch TerencePresidentSell (S)13K$175K
Mar 9, 2022Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)4K$57K
Mar 8, 2022Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)5K$65K
Mar 4, 2022Toler William DouglasCEO and Chairman of the Board, DirectorBuy (P)16K$235K

One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
17
Insiders
Form 4 open-market
00$0
US House
STOCK Act trades
00$0

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

5 tracked filers in Q2 2026 filingsstill filing
01325Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $53K
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

0 most recent

No filings captured for this ticker in the live stream yet.

Keep exploring

Connected entities for HYFM

Browse more

Build

Ask your agent what changed in HYFM

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/HYFM/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for HYFM.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + the live filing stream, joined for HYFM. Filings are public domain, sourced to SEC EDGAR.