Koru Medical Systems, Inc.: which funds bought and sold

Institutions that bought and sold Koru Medical Systems 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, 42 institutions that filed 13F reports for both quarters added to or opened positions in Koru Medical Systems, and 42 cut or closed them. Together they sold a net 1.2M shares, −5.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 17K shares (+2.2%); index fund managers were net buyers of 582K shares (+8.6%). 11 opened a new position and 17 sold out entirely.

Bought, Q2 2026 42 institutions, 11 of them new holders Sold, Q2 2026 42 institutions, 17 of them sold out

Net change, all compared −1.2M shares (−5.5%)

Net change, active managers +17K shares (+2.2%), 8 bought, 10 sold

Buyers versus sellers

institutions compared, 101

42 bought 17 42 sold

Active managers and hedge funds 8 bought · 10 sold · +17K

Index fund managers 8 bought · 1 sold · +582K

Other institutions 26 bought · 31 sold · −1.8M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
HRT Financial LP	+353K New position	353K	$1.5M
Blackrock, Inc. Index funds	+257K +10.8%	2.6M	$11M
Vanguard Capital Management LLC Index funds	+132K +7.8%	1.8M	$7.6M
Renaissance Technologies LLC Hedge fund	+119K +259.3%	165K	$692,580
Squarepoint Ops LLC Hedge fund	+112K +858.0%	125K	$523,971
Geode Capital Management, LLC Index funds	+77K +7.3%	1.1M	$4.7M
Vanguard Portfolio Management LLC Index funds	+54K +21.3%	310K	$1.3M
Arrowstreet Capital, Limited Partnership Hedge fund	+34K +187.3%	53K	$222,062
Landscape Capital Management, L.L.C.	+29K New position	29K	$123,572
Wells Fargo & Company	+25K +162.2%	41K	$172,750
Northern Trust Corp Index funds	+25K +7.7%	347K	$1.5M
Qube Research & Technologies Ltd Hedge fund	+21K +11.7%	200K	$839,744
Vanguard Fiduciary Trust Co Index funds	+20K +6.4%	326K	$1.4M
Citigroup Inc	+19K +822.7%	21K	$88,779
Charles Schwab Investment Management Inc Index funds	+19K +17.5%	127K	$532,182
Millennium Management LLC Hedge fund	+16K New position	16K	$68,695
Simcoe Capital LLC	+16K +2.0%	827K	$3.5M
Strs Ohio	+13K +22.0%	74K	$311,640
Gsa Capital Partners LLP	+13K +76.1%	30K	$124,000
Connor, Clark & Lunn Investment Management Ltd.	+12K +8.7%	153K	$642,365

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	+119K +259.3%	165K	$692,580
Squarepoint Ops LLC Hedge fund	+112K +858.0%	125K	$523,971
Arrowstreet Capital, Limited Partnership Hedge fund	+34K +187.3%	53K	$222,062
Qube Research & Technologies Ltd Hedge fund	+21K +11.7%	200K	$839,744
Millennium Management LLC Hedge fund	+16K New position	16K	$68,695
Price T Rowe Associates Inc Active manager	+9,955 +36.8%	37K	$156,000
Algert Global LLC Hedge fund	+8,270 +57.2%	23K	$95,495
FMR LLC Active manager	+2,914 +105.4%	5,680	$23,856

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Empire Financial Management Company, LLC	−703K Sold out	0	—
First Light Asset Management, LLC	−380K −10.1%	3.4M	$14.2M
Royal Bank Of Canada	−231K −97.9%	5,024	$21,000
Russell Investments Group, Ltd.	−154K −36.3%	270K	$1.1M
Topline Capital Management, LLC	−141K −4.0%	3.4M	$14.2M
Goldman Sachs Group Inc	−125K −55.5%	100K	$421,995
White Pine Capital LLC	−119K −29.6%	284K	$1.2M
Sei Investments Co	−94K Sold out	0	—
Calamos Advisors LLC Active manager	−79K Sold out	0	—
Two Sigma Investments, LP Hedge fund	−77K −84.1%	15K	$61,366
Informed Momentum Co LLC	−77K Sold out	0	—
Hillsdale Investment Management Inc.	−62K Sold out	0	—
Morgan Stanley	−46K −12.5%	323K	$1.4M
Engineers Gate Manager LP Hedge fund	−34K Sold out	0	—
Albion Financial Group	−30K −13.9%	186K	$782,771
Debussy Capital Management LP	−30K Sold out	0	—
Trexquant Investment LP Hedge fund	−29K Sold out	0	—
Globeflex Capital L P	−26K Sold out	0	—
Boothbay Fund Management, LLC Hedge fund	−26K −67.5%	12K	$52,361
Bridgeway Capital Management, LLC Active manager	−24K −31.2%	52K	$217,581

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Calamos Advisors LLC Active manager	−79K Sold out	0	—
Two Sigma Investments, LP Hedge fund	−77K −84.1%	15K	$61,366
Engineers Gate Manager LP Hedge fund	−34K Sold out	0	—
Trexquant Investment LP Hedge fund	−29K Sold out	0	—
Boothbay Fund Management, LLC Hedge fund	−26K −67.5%	12K	$52,361
Bridgeway Capital Management, LLC Active manager	−24K −31.2%	52K	$217,581
Citadel Advisors LLC Hedge fund	−20K −41.5%	29K	$119,784
Intech Investment Management LLC Active manager	−11K Sold out	0	—
Centiva Capital, LP Hedge fund	−3,690 −19.5%	15K	$63,890
Marshall Wace, LLP Hedge fund	−3,171 −12.9%	21K	$90,282

New positions

largest by value

Institution	Shares	Value June 30, 2026
HRT Financial LP	353K	$1.5M
Landscape Capital Management, L.L.C.	29K	$123,572
Millennium Management LLCHedge fund	16K	$68,695
Voya Investment Management LLC	11K	$48,203
Northwestern Mutual Wealth Management Co	31	$130
Allworth Financial LP	20	$84
Arax Advisory Partners	19	$79
Integrated Wealth Concepts LLC	13	$54
Eversource Wealth Advisors, LLC	8	$34
Rothschild Investment LLC	5	$21

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Empire Financial Management Company, LLC	703K	$3M
Sei Investments Co	94K	$405,095
Calamos Advisors LLCActive manager	79K	$341,824
Informed Momentum Co LLC	77K	$332,696
Hillsdale Investment Management Inc.	62K	$265,680
Engineers Gate Manager LPHedge fund	34K	$145,269
Debussy Capital Management LP	30K	$129,103
Trexquant Investment LPHedge fund	29K	$127,276
Globeflex Capital L P	26K	$112,355
Susquehanna International Group, LLP	19K	$81,791

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 85
Ten largest holders: 77.3%
Index fund managers: 35.8%
Active managers and hedge funds: 3.7%

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	8	10	1	4	+17K	+2.2%
Index fund managers	8	1	0	0	+582K	+8.6%
Other institutions	26	31	10	13	−1.8M	−13.0%

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.

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 Koru Medical Systems.

Only managers that filed a holdings report for both quarters are compared (101 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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