undamentalytics Newsletter

Ero Copper Corp.: which funds bought and sold

Institutions that bought and sold Ero Copper 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, 121 institutions that filed 13F reports for both quarters added to or opened positions in Ero Copper, and 90 cut or closed them. Together they sold a net 580K shares, −0.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 837K shares (−2.8%); index fund managers were net buyers of 298K shares (+7.3%). 45 opened a new position and 29 sold out entirely.

Bought, Q2 2026 121 institutions, 45 of them new holders Sold, Q2 2026 90 institutions, 29 of them sold out
Net change, all compared −580K shares (−0.8%)
Net change, active managers −837K shares (−2.8%), 22 bought, 21 sold

Buyers versus sellers

institutions compared, 234
Active managers and hedge funds 22 bought · 21 sold · −837K
Index fund managers 5 bought · 1 sold · +298K
Other institutions 94 bought · 68 sold · −41K

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Franklin Resources Inc Active manager +1.3M +1374.9% 1.4M $38.4M
Massachusetts Financial Services Co Active manager +1.3M +613.3% 1.5M $43.7M
Castleknight Management LP Hedge fund +825K +970.8% 910K $24.3M
TD Asset Management Inc +794K +214.9% 1.2M $31.1M
American Century Companies Inc Active manager +764K +83.2% 1.7M $44.9M
Assenagon Asset Management S.A. +721K New position 721K $19.3M
Quadrature Capital Ltd Hedge fund +654K New position 654K $17.5M
Connor, Clark & Lunn Investment Management Ltd. +620K +493.6% 746K $19.9M
Amundi +446K +85.8% 965K $25.8M
William Blair Investment Management, LLC Active manager +440K New position 440K $11.8M
Mirae Asset Global Etfs Holdings Ltd. +426K +9.8% 4.8M $127M
Frontier Capital Management Co LLC Active manager +289K +23.1% 1.5M $41.2M
Royal Bank Of Canada +231K +65.2% 586K $15.7M
Vanguard Capital Management LLC Index funds +221K +8.0% 3.0M $79.3M
1832 Asset Management L.P. +220K +62.9% 570K $15.2M
Dimensional Fund Advisors LP +199K +20.2% 1.2M $31.7M
Citadel Advisors LLC Hedge fund +182K +83.8% 399K $10.7M
Storebrand Asset Management As +178K New position 178K $4.8M
Lazard Asset Management LLC Active manager +168K +157.2% 274K $7.3M
Intact Investment Management Inc. +146K +266.3% 201K $5.4M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
FMR LLC Active manager −5.1M −53.2% 4.5M $120M
Fil Ltd Active manager −1.1M −11.0% 9.3M $249M
Gmt Capital Corp −823K −22.5% 2.8M $75.5M
Invesco Ltd. −793K −16.2% 4.1M $109M
SG Americas Securities, LLC −600K Sold out 0 —
Morgan Stanley −545K −51.8% 506K $13.5M
Jpmorgan Chase & Co −510K −96.5% 18K $478,570
Arrowstreet Capital, Limited Partnership Hedge fund −407K −41.7% 568K $15.2M
Toronto Dominion Bank −375K −83.0% 77K $2M
Hillsdale Investment Management Inc. −279K −40.2% 415K $11.1M
Jane Street Group, LLC −262K Sold out 0 —
Militia Capital Management LLC −188K Sold out 0 —
Gemmer Asset Management LLC −180K Sold out 0 —
Manufacturers Life Insurance Company, The −164K −22.6% 559K $14.9M
Two Sigma Investments, LP Hedge fund −151K −16.2% 781K $20.9M
Massar Capital Management, LP −138K −84.1% 26K $699,887
Price T Rowe Associates Inc Active manager −136K −17.8% 627K $16.8M
Goldman Sachs Group Inc −112K −13.2% 741K $19.8M
Bank Of Montreal −103K −10.3% 899K $24M
Canada Life Assurance Co −75K −28.1% 191K $5.1M

New positions

largest by value

Sold out

largest by value
InstitutionSharesValue March 31, 2026
SG Americas Securities, LLC 600K $16M
Jane Street Group, LLC 262K $7M
Militia Capital Management LLC 188K $5M
Gemmer Asset Management LLC 180K $4.8M
Xtx Topco Ltd 45K $1.2M
Boothbay Fund Management, LLCHedge fund 32K $849,706
Simplex Trading, LLC 25K $654,241
Sig North Trading, Ulc 24K $635,386
Marex Group Ltd 21K $560,897
Patriot Financial Group Insurance Agency, LLC 20K $532,334

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
208
Ten largest holders
50.7%
of 13F-reported shares
Index fund managers
6.3%
of 13F-reported shares
Active managers and hedge funds
41.7%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 22 21 6 5 −837K −2.8%
Index fund managers 5 1 0 0 +298K +7.3%
Other institutions 94 68 39 24 −41K −0.1%

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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