Sonoma Pharmaceuticals, Inc.: which funds bought and sold

Institutions that bought and sold Sonoma Pharmaceuticals shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 5 institutions that filed 13F reports for both quarters added to or opened positions in Sonoma Pharmaceuticals, and 7 cut or closed them. Together they added a net 41K shares, +60.4% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 40K shares; index fund managers were net buyers of 6,846 shares (+17.6%). 3 opened a new position and 6 sold out entirely.

Bought, Q2 2026 5 institutions, 3 of them new holders Sold, Q2 2026 7 institutions, 6 of them sold out

Net change, all compared +41K shares (+60.4%)

Net change, active managers +40K shares (—), 1 bought, 0 sold

Buyers versus sellers

institutions compared, 19

5 bought 7 7 sold

Active managers and hedge funds 1 bought · 0 sold · +40K

Index fund managers 1 bought · 0 sold · +6,846

Other institutions 3 bought · 7 sold · −6,548

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	+40K New position	40K	$49,776
UBS Group AG	+7,802 +130033.3%	7,808	$9,604
Geode Capital Management, LLC Index funds	+6,846 +34.3%	27K	$32,947
Barclays PLC	+459 New position	459	$565
Harbour Investments, Inc.	+15 New position	15	$18

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Drw Securities, LLC	−12K Sold out	0	—
Citigroup Inc	−1,425 Sold out	0	—
Tower Research Capital LLC (TRC)	−1,231 Sold out	0	—
Jpmorgan Chase & Co	−123 Sold out	0	—
Us Bancorp	−25 Sold out	0	—
Morgan Stanley	−4 −0.2%	2,000	$2,460
Caitong International Asset Management Co., Ltd	−1 Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
None of the active managers on our list.

New positions

largest by value

Institution	Shares	Value June 30, 2026
Renaissance Technologies LLCHedge fund	40K	$49,776
Barclays PLC	459	$565
Harbour Investments, Inc.	15	$18

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Drw Securities, LLC	12K	$25,591
Citigroup Inc	1,425	$3,035
Tower Research Capital LLC (TRC)	1,231	$2,622
Jpmorgan Chase & Co	123	$255
Us Bancorp	25	$53
Caitong International Asset Management Co., Ltd	1	$2

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 14
Ten largest holders: 99.9%
Index fund managers: 41.3%
Active managers and hedge funds: 36.5%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	1	0	1	0	+40K	—
Index fund managers	1	0	0	0	+6,846	+17.6%
Other institutions	3	7	2	6	−6,548	−22.9%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Sonoma Pharmaceuticals.

Only managers that filed a holdings report for both quarters are compared (19 here). 2 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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