콜레지움 파마슈티컬, Inc.
US ˙ NasdaqGS ˙ US19459J1043

SecurityCOLL / Collegium Pharmaceutical, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership748,812 shares
Latest Disclosed Value $ 24,763,215
Marshall Wace, Llp reports 52.09% increase in ownership of COLL / Collegium Pharmaceutical, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 748,812 shares of Collegium Pharmaceutical, Inc. (US:COLL) valued at $24,763,213 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 492,360 shares of Collegium Pharmaceutical, Inc.. This represents a change in shares of 52.09% during the quarter. The current value of the position is $24,995,345 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 748,812 256,452 52.09 24,763 8.63 0.0117
2026-02-13 2025-12-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 492,360 213,347 76.46 22,796 133.52 0.0208
2025-11-13 2025-09-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 279,013 142,292 104.07 9,763 141.51 0.0099
2025-08-13 2025-06-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 136,721 136,721 4,043 0.0046
2024-11-14 2024-09-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 0 -70,964 -100.00 0 -100.00
2024-08-14 2024-06-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 70,964 70,964 2,285 0.0031
2024-05-15 2024-03-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 0 -136,049 -100.00 0 -100.00
2024-02-14 2023-12-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 136,049 -250,247 -64.78 4,188 -51.50 0.0071
2023-11-14 2023-09-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 386,296 -108,180 -21.88 8,634 -18.76 0.0175
2023-08-14 2023-06-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 494,476 -85,435 -14.73 10,626 -23.62 0.0208
2023-05-15 2023-03-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 579,911 272,881 88.88 13,912 95.31 0.0296
2023-02-14 2022-12-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 307,030 267,065 668.25 7,123 1,012.97 0.0160
2022-11-14 2022-09-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 39,965 39,965 640 0.0014
2021-11-15 2021-09-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 0 -11,718 -100.00 0 -100.00
2021-08-13 2021-06-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 11,718 11,718 277 0.0013
2019-08-14 2019-06-30 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 0 -56,961 -100.00 0 -100.00
2019-05-29 2019-03-31 13F/A-1 COLLEGIUM PHARMA COMMON STOCK 19459J104 56,961 56,961 862 0.0081
2019-05-14 2019-03-31 13F COLLEGIUM PHARMA COMMON STOCK 19459J104 56,961 862 0.0082
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.