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COLL · Collegium Pharmaceutical, Inc

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Market Cap
$766.03M
Shares
32.56M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 281
Total Value: $1,419,739,521
Total Shares: 39,219,756
Showing 1–100 of 284 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 281 13F filers · Δ vs Mar 31, 2026
Top Holder
13.9%
Sep 2023 → Jun 2026 · range 13.5% – 16.1%
+0.4 pts
Top 5
32.5%
Sep 2023 → Jun 2026 · range 30.3% – 41.9%
+2.1 pts
Top 10
50.4%
Sep 2023 → Jun 2026 · range 48.4% – 61.5%
+2.1 pts
HHI
401
Sep 2023 → Jun 2026 · range 379 – 526
Broadly held+22

Quarterly Activity

vs Mar 31, 2026
New
46
Increased
121
Decreased
84
Sold Out
33
Unchanged
30
Holder count: +13
Institutional value: +13.0%
Shares held: +3.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 284
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1267565 CUSIP 19459J104 13F (30d) 196 filings 195 filers Visit website Investor relations