Simpson Manufacturing Co., Inc.: which funds bought and sold

Institutions that bought and sold Simpson Manufacturing 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, 219 institutions that filed 13F reports for both quarters added to or opened positions in Simpson Manufacturing, and 222 cut or closed them. Together they sold a net 268K shares, −0.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 85K shares (+0.6%); index fund managers were net buyers of 129K shares (+1.1%). 66 opened a new position and 44 sold out entirely.

Bought, Q2 2026 219 institutions, 66 of them new holders Sold, Q2 2026 222 institutions, 44 of them sold out

Net change, all compared −268K shares (−0.7%)

Net change, active managers +85K shares (+0.6%), 33 bought, 30 sold

Buyers versus sellers

institutions compared, 520

219 bought 79 222 sold

Active managers and hedge funds 33 bought · 30 sold · +85K

Index fund managers 6 bought · 6 sold · +129K

Other institutions 180 bought · 186 sold · −482K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
FMR LLC Active manager	+1.0M +38.7%	3.7M	$768M
Massachusetts Financial Services Co Active manager	+369K +212.3%	543K	$116M
Nomura Asset Management International Inc.	+186K New position	186K	$39M
BNP Paribas Asset Management Holding S.A.	+128K +18506.2%	129K	$27M
Capital World Investors Active manager	+94K +54.5%	267K	$55.9M
American Century Companies Inc Active manager	+91K +260.2%	126K	$26.4M
Fivespan Partners, LP	+90K New position	90K	$18.8M
Blackrock, Inc. Index funds	+86K +2.1%	4.1M	$862M
Invesco Ltd.	+70K +106.3%	135K	$28.3M
Price T Rowe Associates Inc Active manager	+50K +24.5%	256K	$53.6M
Public Sector Pension Investment Board	+42K New position	42K	$8.8M
AQR Capital Management LLC Hedge fund	+40K +22.4%	219K	$45.9M
Clearbridge Investments, LLC Active manager	+39K +41.0%	134K	$28M
Bridgewater Associates, LP Hedge fund	+39K New position	39K	$8.1M
Citadel Advisors LLC Hedge fund	+38K +166.7%	61K	$12.7M
Summittx Capital, L.P.	+38K New position	38K	$7.9M
Goldman Sachs Group Inc	+38K +9.1%	452K	$94.6M
Cornerstone Capital, Inc.	+37K +35.4%	143K	$29.9M
State Street Corp Index funds	+37K +2.9%	1.3M	$274M
Treasurer Of The State Of North Carolina	+37K +55.0%	104K	$21.7M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
FMR LLC Active manager	+1.0M +38.7%	3.7M	$768M
Massachusetts Financial Services Co Active manager	+369K +212.3%	543K	$116M
Capital World Investors Active manager	+94K +54.5%	267K	$55.9M
American Century Companies Inc Active manager	+91K +260.2%	126K	$26.4M
Price T Rowe Associates Inc Active manager	+50K +24.5%	256K	$53.6M
AQR Capital Management LLC Hedge fund	+40K +22.4%	219K	$45.9M
Clearbridge Investments, LLC Active manager	+39K +41.0%	134K	$28M
Bridgewater Associates, LP Hedge fund	+39K New position	39K	$8.1M
Citadel Advisors LLC Hedge fund	+38K +166.7%	61K	$12.7M
Trexquant Investment LP Hedge fund	+35K New position	35K	$7.4M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Valueact Holdings, L.P. Hedge fund	−567K −40.6%	831K	$174M
Kayne Anderson Rudnick Investment Management LLC Active manager	−317K −8.2%	3.6M	$747M
Conestoga Capital Advisors, LLC	−228K −37.7%	377K	$79M
State Farm Mutual Automobile Insurance Co	−182K Sold out	0	—
Adage Capital Partners Gp, L.L.C. Hedge fund	−158K Sold out	0	—
Neuberger Berman Group LLC Active manager	−154K −20.3%	606K	$127M
Bessemer Group Inc	−132K −72.6%	50K	$10.4M
Select Equity Group, L.P. Active manager	−122K Sold out	0	—
Morgan Stanley	−96K −7.4%	1.2M	$251M
T. Rowe Price Investment Management, Inc. Active manager	−96K −74.0%	34K	$7M
Argent Capital Management LLC	−80K Sold out	0	—
Cooke & Bieler LP Active manager	−68K −50.3%	67K	$14.1M
Riverbridge Partners LLC Active manager	−57K −31.3%	124K	$26M
Verition Fund Management LLC Hedge fund	−55K Sold out	0	—
Raymond James Financial Inc	−54K −16.6%	270K	$56.6M
D. E. Shaw & Co., Inc. Hedge fund	−53K −63.8%	30K	$6.3M
River Road Asset Management, LLC Active manager	−52K −43.3%	67K	$14.1M
Jane Street Group, LLC	−48K −59.6%	33K	$6.8M
Royal Bank Of Canada	−47K −27.2%	126K	$26.4M
Jpmorgan Chase & Co	−43K −7.5%	525K	$110M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Valueact Holdings, L.P. Hedge fund	−567K −40.6%	831K	$174M
Kayne Anderson Rudnick Investment Management LLC Active manager	−317K −8.2%	3.6M	$747M
Adage Capital Partners Gp, L.L.C. Hedge fund	−158K Sold out	0	—
Neuberger Berman Group LLC Active manager	−154K −20.3%	606K	$127M
Select Equity Group, L.P. Active manager	−122K Sold out	0	—
T. Rowe Price Investment Management, Inc. Active manager	−96K −74.0%	34K	$7M
Cooke & Bieler LP Active manager	−68K −50.3%	67K	$14.1M
Riverbridge Partners LLC Active manager	−57K −31.3%	124K	$26M
Verition Fund Management LLC Hedge fund	−55K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−53K −63.8%	30K	$6.3M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Nomura Asset Management International Inc.	186K	$39M
Fivespan Partners, LP	90K	$18.8M
Public Sector Pension Investment Board	42K	$8.8M
Bridgewater Associates, LPHedge fund	39K	$8.1M
Summittx Capital, L.P.	38K	$7.9M
Trexquant Investment LPHedge fund	35K	$7.4M
Millennium Management LLCHedge fund	30K	$6.2M
Polar Asset Management Partners Inc.	25K	$5.3M
Tudor Investment Corp Et AlHedge fund	21K	$4.3M
Campbell & Co Investment Adviser LLC	16K	$3.5M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
State Farm Mutual Automobile Insurance Co	182K	$31.2M
Adage Capital Partners Gp, L.L.C.Hedge fund	158K	$27M
Select Equity Group, L.P.Active manager	122K	$21M
Argent Capital Management LLC	80K	$13.7M
Verition Fund Management LLCHedge fund	55K	$9.4M
Candriam S.C.A.	42K	$7.1M
Castleark Management LLC	38K	$6.6M
Moran Wealth Management, LLC	30K	$5.2M
Brasada Capital Management, LP	30K	$5M
Edgestream Partners, L.P.Hedge fund	13K	$2.2M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 483
Ten largest holders: 49.5%
Index fund managers: 28.0%
Active managers and hedge funds: 37.7%

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	33	30	12	7	+85K	+0.6%
Index fund managers	6	6	0	0	+129K	+1.1%
Other institutions	180	186	54	37	−482K	−3.4%

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 Simpson Manufacturing.

Only managers that filed a holdings report for both quarters are compared (520 here). 15 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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