Senestech, Inc.: which funds bought and sold

Institutions that bought and sold Senestech 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 Senestech, and 11 cut or closed them. Together they sold a net 130K shares, −20.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 3,968 shares (+3.2%); index fund managers were net sellers of 14K shares (−9.3%). 4 opened a new position and 2 sold out entirely.

Bought, Q2 2026 5 institutions, 4 of them new holders Sold, Q2 2026 11 institutions, 2 of them sold out

Net change, all compared −130K shares (−20.9%)

Net change, active managers +3,968 shares (+3.2%), 1 bought, 1 sold

Buyers versus sellers

institutions compared, 19

5 bought 3 11 sold

Active managers and hedge funds 1 bought · 1 sold · +3,968

Index fund managers 1 bought · 3 sold · −14K

Other institutions 3 bought · 7 sold · −120K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	+35K +312.3%	47K	$69,540
Diversify Advisory Services, LLC	+19K New position	19K	$25,428
Northern Trust Corp Index funds	+18K New position	18K	$26,205
Barclays PLC	+106 New position	106	$158
Caitong International Asset Management Co., Ltd	+13 New position	13	$19

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Sabby Management, LLC	−77K −35.1%	142K	$211,216
Renaissance Technologies LLC Hedge fund	−31K −27.5%	83K	$123,098
UBS Group AG	−20K −93.7%	1,307	$1,947
Geode Capital Management, LLC Index funds	−19K −29.7%	44K	$66,064
Jane Street Group, LLC	−17K Sold out	0	—
Two Sigma Securities, LLC	−11K Sold out	0	—
Xtx Topco Ltd	−11K −51.1%	10K	$15,359
Vanguard Capital Management LLC Index funds	−8,103 −18.9%	35K	$51,795
Vanguard Fiduciary Trust Co Index funds	−5,100 −16.1%	27K	$39,625
Osaic Holdings, Inc.	−4,000 −80.0%	1,000	$1,490
Essex Investment Management Co LLC	−91 −0.3%	26K	$39,042

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	−31K −27.5%	83K	$123,098

New positions

largest by value

Institution	Shares	Value June 30, 2026
Northern Trust CorpIndex funds	18K	$26,205
Diversify Advisory Services, LLC	19K	$25,428
Barclays PLC	106	$158
Caitong International Asset Management Co., Ltd	13	$19

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Jane Street Group, LLC	17K	$27,332
Two Sigma Securities, LLC	11K	$17,866

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 17
Ten largest holders: 93.3%
Index fund managers: 28.5%
Active managers and hedge funds: 26.3%

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	1	0	0	+3,968	+3.2%
Index fund managers	1	3	1	0	−14K	−9.3%
Other institutions	3	7	3	2	−120K	−35.0%

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.

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