John Overdeck’s Collegium Pharmaceutical COLL Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$3.86M Sell
106,704
-483,412
-82% -$16.5M ﹤0.01% 2394
2026
Q1
$19.5M Buy
590,116
+224,017
+61% +$9.48M 0.02% 961
2025
Q4
$17M Buy
366,099
+96,781
+36% +$4.05M 0.02% 808
2025
Q3
$9.42M Buy
269,318
+242,310
+897% +$8.42M 0.01% 998
2025
Q2
$799K Sell
27,008
-48,216
-64% -$1.38M ﹤0.01% 2366
2025
Q1
$2.25M Buy
75,224
+4,401
+6% +$134K ﹤0.01% 1659
2024
Q4
$2.03M Sell
70,823
-135,582
-66% -$4.49M ﹤0.01% 1704
2024
Q3
$7.98M Sell
206,405
-48,368
-19% -$1.72M 0.02% 857
2024
Q2
$8.2M Buy
254,773
+28,967
+13% +$1M 0.02% 793
2024
Q1
$8.77M Sell
225,806
-34,006
-13% -$1.19M 0.02% 704
2023
Q4
$8M Sell
259,812
-89,194
-26% -$2.23M 0.02% 769
2023
Q3
$7.8M Sell
349,006
-16,616
-5% -$379K 0.02% 694
2023
Q2
$7.86M Buy
365,622
+6,413
+2% +$146K 0.02% 737
2023
Q1
$8.62M Buy
359,209
+245,663
+216% +$6.51M 0.02% 647
2022
Q4
$2.63M Buy
+113,546
New +$2.29M 0.01% 1169
2022
Q2
Sell
-28,734
Closed -$585K 2575
2022
Q1
$585K Buy
+28,734
New +$543K ﹤0.01% 1946
2021
Q3
Sell
-41,734
Closed -$987K 4298
2021
Q2
$987K Sell
41,734
-774
-2% -$17.9K ﹤0.01% 2490
2021
Q1
$1.01M Buy
+42,508
New +$1.01M ﹤0.01% 2302
2020
Q3
Sell
-112,538
Closed -$1.97M 3155
2020
Q2
$1.97M Sell
112,538
-69,375
-38% -$1.36M 0.01% 1108
2020
Q1
$2.97M Buy
181,913
+118,977
+189% +$2.46M 0.02% 755
2019
Q4
$1.29M Buy
+62,936
New +$1.05M ﹤0.01% 1951
2019
Q2
Sell
-69,072
Closed -$1.05M 3372
2019
Q1
$1.05M Buy
+69,072
New +$1.11M ﹤0.01% 1797
2018
Q4
Sell
-228,319
Closed -$3.37M 3049
2018
Q3
$3.37M Buy
228,319
+214,116
+1,508% +$3.8M 0.01% 1143
2018
Q2
$339K Buy
14,203
+3,916
+38% +$96.3K ﹤0.01% 2877
2018
Q1
$263K Sell
10,287
-53,436
-84% -$1.27M ﹤0.01% 2840
2017
Q4
$1.18M Buy
+63,723
New +$913K ﹤0.01% 1856
2016
Q1
Sell
-8,500
Closed -$234K 2835
2015
Q4
$234K Buy
+8,500
New +$179K ﹤0.01% 2380

Other funds holding COLL

John Overdeck's COLL Position: Q2 2026 in Review

John Overdeck reduced its Collegium Pharmaceutical (COLL) stake by 82% in Q2 2026, selling an estimated $16.5M and leaving 106,704 shares worth $3.86M. The position accounts for ﹤0.01% of the portfolio, ranked #2394.

John Overdeck first reported a position in COLL in Q4 2015 and has held it in 27 quarters since. The position peaked at $19.5M in Q1 2026. 277 funds tracked by Wall St. Rank hold COLL as of Q2 2026.

  • John Overdeck held 106,704 shares of Collegium Pharmaceutical worth $3.86M as of Q2 2026.
  • John Overdeck sold 483,412 Collegium Pharmaceutical shares in Q2 2026, an estimated $16.5M.
  • Collegium Pharmaceutical made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #2394 holding.
  • John Overdeck first reported a position in Collegium Pharmaceutical in Q4 2015 and has held it in 27 quarters since.
  • John Overdeck's Collegium Pharmaceutical position peaked at $19.5M in Q1 2026.
  • 277 funds tracked by Wall St. Rank held Collegium Pharmaceutical as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.