Orion is a chemicals - specialty company in the basic materials sector on NYSE, with a market cap of $295.3M. As of Q3 2025, 93% of shares are held by 176 institutional investors, with PZENA INVESTMENT MANAGEMENT LLC as the largest holder at 8.36%.
Overview of institutional ownership in OEC as of Q3 2025 with a market cap of $425.6M
Based on market cap of $425.6M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Institutions with the largest positions in OEC as of Q3 2025
| Institution | Position Value |
|---|---|
PZENA INVESTMENT MANAGEMENT LLC Long Only Manager | $35.6M 0.12% of portfolio |
B BlackRock, Inc. Institution | $32.2M 0.00% of portfolio |
D Divisar Capital Management LLC Hedge Fund•Long/Short | $18.6M 5.05% of portfolio |
B BROWN ADVISORY INC RIA/Wealth | $18.6M 0.03% of portfolio |
H Harvey Partners, LLC Institution | $18.4M 1.67% of portfolio |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | $17.8M 0.00% of portfolio |
A AMERICAN CENTURY COMPANIES INC Institution | $16.2M 0.01% of portfolio |
VANGUARD GROUP INC Institution | $14.4M 0.00% of portfolio |
D D. E. Shaw & Co., Inc. Institution | $14.2M 0.01% of portfolio |
Invesco Ltd. ETF Provider | $13.6M 0.00% of portfolio |
Institutional buying and selling activity for OEC in Q3 2025
| Institution | Net Bought |
|---|---|
M Medina Singh Partners, LLC Hedge Fund•Value | +$6.7M +879.5K shares |
Verition Fund Management LLC Hedge Fund•Multi-Strategy | +$2.9M +381.4K shares |
D D. E. Shaw & Co., Inc. Institution | +$2.6M +340.1K shares |
C CSM Advisors, LLC Institution | +$2.1M +278.5K shares |
Atom Investors LP Hedge Fund•Market Neutral | +$1.8M +242.1K shares |
D Divisar Capital Management LLC Hedge Fund•Long/Short | +$1.8M +241.2K shares |
VANGUARD GROUP INC Institution | +$1.6M +213.3K shares |
FIRST TRUST ADVISORS LP ETF Provider | +$1.3M +173.2K shares |
Q Qube Research & Technologies Ltd Institution | +$1.1M +145.8K shares |
H HRT FINANCIAL LLC Institution | +$1.1M +139.3K shares |
| Institution | Net Sold |
|---|---|
−$8.2M −1.1M shares | |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager | −$6.6M −633.4K shares |
K Kent Lake PR LLC Hedge Fund•Long/Short | −$4.7M −450.7K shares |
H HEARTLAND ADVISORS INC Long Only Manager | −$3.0M −400.0K shares |
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$2.6M −337.7K shares |
R ROYAL BANK OF CANADA Institution | −$2.4M −312.3K shares |
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager | −$1.8M −172.5K shares |
Walnut Level Capital LLC Hedge Fund•Sector | −$1.8M −232.8K shares |
FMR LLC Institution | −$1.6M −205.5K shares |
C Cubist Systematic Strategies, LLC Institution | −$1.5M −201.4K shares |
Institutions that initiated new positions or completely exited OEC in Q3 2025
| Institution | Position Value |
|---|---|
Glenmede Investment Management, LP Long Only Manager | $88.8K 11.7K shares |
TERRIL BROTHERS, INC. RIA/Wealth | $75.8K 10.0K shares |
S State of Alaska, Department of Revenue Institution | $22.8K 3.0K shares |
V Versant Capital Management, Inc RIA/Wealth | $7.7K 1.0K shares |
Performa Ltd , LLC Long Only Manager | $7.6K 1.0K shares |
Point72 Europe LLP Digital Asset Manager | $5.6K 742.0 shares |
Red Tortoise LLC RIA/Wealth | $2.8K 363.0 shares |
O Optiver Holding B.V. Institution | $1.6K 214.0 shares |
| Institution | Previous Position |
|---|---|
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager | $6.6M 633.4K shares |
K Kent Lake PR LLC Hedge Fund•Long/Short | $4.7M 450.7K shares |
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager | $1.8M 172.5K shares |
I INTREPID FAMILY OFFICE LLC Institution | $1.5M 143.7K shares |
PENN CAPITAL MANAGEMENT CO INC Long Only Manager | $1.5M 142.6K shares |
DEAN INVESTMENT ASSOCIATES, LLC Long Only Manager | $1.5M 141.9K shares |
Dean Capital Management Long Only Manager | $1.2M 114.3K shares |
GANNETT WELSH & KOTLER Long Only Manager | $996.6K 95.0K shares |
Legato Capital Management LLC Fund of Funds | $750.6K 71.6K shares |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $729.2K 69.5K shares |
Institutions with the largest Call and Put options positions in OEC as of Q3 2025
| Institution | Position Value |
|---|---|
Walnut Level Capital LLC Hedge Fund•Sector | $2.3M 3.0K contracts |
Walleye Trading LLC RIA/Wealth | $999.0K 1.3K contracts |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | $724.6K 956.0 contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $529.1K 698.0 contracts |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $250.1K 330.0 contracts |
J JANE STREET GROUP, LLC Institution | $81.1K 107.0 contracts |
| Institution | Position Value |
|---|---|
Walleye Trading LLC RIA/Wealth | $332.8K 439.0 contracts |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | $289.6K 382.0 contracts |
Institutions with OEC as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
D Divisar Capital Management LLC Hedge Fund•Long/Short | 5.05% $18.6M |
I Inherent Management Corp. Institution | 3.70% $6.5M |
Walnut Level Capital LLC Hedge Fund•Sector | 3.18% $4.5M |
W West Tower Group, LLC Fund of Funds | 2.43% $838.7K |
M Medina Singh Partners, LLC Hedge Fund•Value | 2.19% $9.4M |
H Harvey Partners, LLC Institution | 1.67% $18.4M |
G GRIZZLYROCK CAPITAL, LLC Hedge Fund•Value | 1.21% $1.6M |
0.75% $6.6M | |
C Carnegie Lake Advisors LLC RIA/Wealth | 0.57% $1.5M |
SummerHaven Investment Management, LLC Long Only Manager | 0.34% $573.0K |
Discover hedge funds investing in OEC

| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Semiconductors Technology | $1.7B | 6.62% | |
Consumer Electronics Technology | $1.3B | 5.29% | |
Software - Infrastructure Technology | $1.0B | 4.05% |
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