OEC Institutional Ownership & Shareholders
ORION S.A. (OEC) is currently held by 182 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $351.88M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of OEC tracked by InsiderSet, reporting ownership valued at approximately $27.90M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $16.66M, representing an estimated loss of -40.27% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 49% of the total disclosed OEC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Pzena Investment Management, Divisar Capital Management Llc, and several other long-term asset managers with concentrated positions in ORION S.A. (OEC).
This page ranks the largest institutional OEC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
182
Total Reported Value
$351.88M
Largest Holder
Blackrock, Inc.
Largest Position
$27.90M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
51
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,207,863 | $27,898,131 | $16,663,137 | -$11,234,994 | -40.27% | |
| Pzena Investment Management | Richard Pzena | 0.08% | 4,695,354 | $26,387,889 | $18,593,602 | -$7,794,287 | -29.54% |
| Divisar Capital Management Llc | 5.17% | 3,384,750 | $22,440,893 | $13,403,610 | -$9,037,283 | -40.27% | |
| American Century Companies Inc | 0.01% | 3,202,288 | $21,231,169 | $12,681,060 | -$8,550,109 | -40.27% | |
| Aqr Capital Management Llc | 0.01% | 2,471,012 | $16,382,807 | $9,785,208 | -$6,597,599 | -40.27% | |
| D. E. Shaw & Co., Inc. | 0.01% | 2,194,308 | $14,548,262 | $8,689,460 | -$5,858,802 | -40.27% | |
| Fmr Llc | 0.00% | 967,949 | $12,515,577 | $3,833,078 | -$8,682,499 | -69.37% | |
| Invesco Ltd. | 0.00% | 1,661,524 | $11,015,903 | $6,579,635 | -$4,436,268 | -40.27% | |
| Fuller & Thaler Asset Management, Inc. | 0.03% | 1,643,929 | $10,899,248 | $6,509,959 | -$4,389,289 | -40.27% | |
| Mackenzie Financial Corp | 0.01% | 1,746,788 | $9,816,949 | $6,917,280 | -$2,899,669 | -29.54% | |
| Dimensional Fund Advisors Lp | 0.00% | 1,656,803 | $9,312,233 | $6,560,940 | -$2,751,293 | -29.54% | |
| Morgan Stanley | 0.00% | 1,321,317 | $8,760,339 | $5,232,415 | -$3,527,924 | -40.27% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,284,941 | $8,519,159 | $5,088,366 | -$3,430,793 | -40.27% | |
| State Street Corp | 0.00% | 1,190,137 | $7,911,292 | $4,712,943 | -$3,198,349 | -40.43% | |
| Harvey Partners, Llc | 0.55% | 1,190,579 | $7,893,539 | $4,714,693 | -$3,178,846 | -40.27% | |
| Geode Capital Management, Llc | 0.00% | 1,332,456 | $7,490,420 | $5,276,526 | -$2,213,894 | -29.56% | |
| Vanguard Portfolio Management Llc | 0.00% | 990,393 | $6,566,306 | $3,921,956 | -$2,644,350 | -40.27% | |
| Acadian Asset Management Llc | 0.01% | 928,105 | $6,144,000 | $3,675,296 | -$2,468,704 | -40.18% | |
| Jpmorgan Chase & Co | 0.00% | 800,223 | $5,457,522 | $3,168,883 | -$2,288,639 | -41.94% | |
| Csm Advisors, Llc | 0.11% | 807,326 | $5,352,000 | $3,197,011 | -$2,154,989 | -40.27% | |
| Minneapolis Portfolio Management Group, Llc | 0.47% | 752,279 | $4,987,611 | $2,979,025 | -$2,008,586 | -40.27% | |
| Raymond James Financial Inc | 0.00% | 745,243 | $4,940,960 | $2,951,162 | -$1,989,798 | -40.27% | |
| Quinn Opportunity Partners Llc | 0.20% | 647,563 | $4,293,343 | $2,564,349 | -$1,728,994 | -40.27% | |
| Vanguard Capital Management Llc | 0.00% | 637,687 | $4,227,865 | $2,525,241 | -$1,702,624 | -40.27% | |
| Two Sigma Investments, Lp | 0.00% | 624,876 | $4,142,928 | $2,474,509 | -$1,668,419 | -40.27% | |
| Bnp Paribas Financial Markets | 0.00% | 613,661 | $4,068,572 | $2,430,098 | -$1,638,474 | -40.27% | |
| Northern Trust Corp | 0.00% | 479,864 | $3,181,498 | $1,900,261 | -$1,281,237 | -40.27% | |
| Castleknight Management Lp | 0.11% | 471,941 | $3,128,969 | $1,868,886 | -$1,260,083 | -40.27% | |
| Trexquant Investment Lp | 0.02% | 462,128 | $3,063,909 | $1,830,027 | -$1,233,882 | -40.27% | |
| Goldman Sachs Group Inc | 0.00% | 445,685 | $2,954,891 | $1,764,913 | -$1,189,978 | -40.27% | |
| Ingalls & Snyder Llc | 0.08% | 439,884 | $2,916,000 | $1,741,941 | -$1,174,059 | -40.26% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 427,959 | $2,837,368 | $1,694,718 | -$1,142,650 | -40.27% | |
| First Pacific Advisors, Lp | 0.03% | 417,388 | $2,767,282 | $1,652,856 | -$1,114,426 | -40.27% | |
| Lazard Asset Management Llc | 0.00% | 408,417 | $2,707,805 | $1,617,331 | -$1,090,474 | -40.27% | |
| Ubs Group Ag | 0.00% | 394,726 | $2,617,033 | $1,563,115 | -$1,053,918 | -40.27% | |
| Jb Capital Partners Lp | 0.34% | 335,000 | $2,214,350 | $1,326,600 | -$887,750 | -40.09% | |
| Vanguard Fiduciary Trust Co | 0.00% | 331,705 | $2,199,204 | $1,313,552 | -$885,652 | -40.27% | |
| Bank Of America Corp | 0.00% | 313,790 | $2,080,427 | $1,242,608 | -$837,819 | -40.27% | |
| Voleon Capital Management Lp | 0.04% | 298,712 | $1,980,461 | $1,182,900 | -$797,561 | -40.27% | |
| Quantinno Capital Management Lp | 0.00% | 286,086 | $1,896,751 | $1,132,901 | -$763,850 | -40.27% | |
| Sei Investments Co | 0.00% | 234,773 | $1,556,554 | $929,701 | -$626,853 | -40.27% | |
| Gsa Capital Partners Llp | 0.09% | 209,368 | $1,388,000 | $829,097 | -$558,903 | -40.27% | |
| Citadel Advisors Llc | 0.00% | 205,347 | $1,361,451 | $813,174 | -$548,277 | -40.27% | |
| Millennium Management Llc | 0.00% | 201,944 | $1,338,889 | $799,698 | -$539,191 | -40.27% | |
| Russell Investments Group, Ltd. | 0.00% | 230,747 | $1,296,797 | $913,758 | -$383,039 | -29.54% | |
| Kennedy Capital Management Llc | 0.02% | 192,754 | $1,277,959 | $763,306 | -$514,653 | -40.27% | |
| Ieq Capital, Llc | 0.01% | 190,101 | $1,260,367 | $752,800 | -$507,567 | -40.27% | |
| First Trust Advisors Lp | 0.00% | 187,527 | $1,243,304 | $742,607 | -$500,697 | -40.27% | |
| Point72 Asset Management, L.P. | 0.00% | 179,165 | $1,187,864 | $709,493 | -$478,371 | -40.27% | |
| Vanguard Global Advisers, Llc | 0.00% | 172,743 | $1,145,286 | $684,062 | -$461,224 | -40.27% |
Frequently asked questions about OEC
Who are the largest institutional holders of OEC?
The largest institutional holders of OEC reported in the latest SEC Form 13F filings include Blackrock, Inc., Pzena Investment Management, Divisar Capital Management Llc, American Century Companies Inc, and Aqr Capital Management Llc. InsiderSet ranks institutional holders by their latest reported OEC position.
What is OEC institutional ownership?
This page tracks OEC positions reported by institutional investment managers through SEC Form 13F. ORION S.A. (OEC) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own OEC?
InsiderSet currently tracks 182 institutional managers reporting OEC holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of OEC shareholders.
How much OEC stock do institutions own?
Institutional investment managers disclosed approximately $351.88M in OEC holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was OEC institutional ownership last updated?
The latest OEC institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional OEC holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its OEC position after the reporting date.
Are institutions buying or selling OEC?
Institutional buying and selling can be analyzed by comparing OEC positions across consecutive 13F reporting periods. InsiderSet's OEC Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View OEC ownership changes.
How has OEC institutional ownership changed over time?
InsiderSet tracks OEC institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.