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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
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OPY

OPPENHEIMER HOLDINGS INC

Security Brokers, Dealers & Flotation Companies · SIC 6211CIK 791963Held by 4 tracked managersEDGAR filings ↗10-K/10-Q ↗

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4 managers · Q2 2026 13F
1.4%
—
0.14%
—
0.02%
(0.4%)
<0.01%
+1.4%

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.