John Overdeck’s Puma Biotechnology PBYI Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $1.14M | Buy |
140,587
+127,587
| +981% | +$934K | ﹤0.01% | 3509 |
|
|
2026
Q1 | $83.1K | Sell |
13,000
-149,351
| -92% | -$963K | ﹤0.01% | 4408 |
|
|
2025
Q4 | $966K | Buy |
162,351
+106,225
| +189% | +$564K | ﹤0.01% | 2940 |
|
|
2025
Q3 | $298K | Sell |
56,126
-134,495
| -71% | -$570K | ﹤0.01% | 3217 |
|
|
2025
Q2 | $654K | Sell |
190,621
-2,179
| -1% | -$6.96K | ﹤0.01% | 2464 |
|
|
2025
Q1 | $571K | Buy |
192,800
+11,329
| +6% | +$35.5K | ﹤0.01% | 2468 |
|
|
2024
Q4 | $553K | Buy |
181,471
+131,916
| +266% | +$384K | ﹤0.01% | 2488 |
|
|
2024
Q3 | $126K | Buy |
49,555
+15,257
| +44% | +$46.2K | ﹤0.01% | 2869 |
|
|
2024
Q2 | $112K | Sell |
34,298
-47,396
| -58% | -$208K | ﹤0.01% | 2808 |
|
|
2024
Q1 | $433K | Sell |
81,694
-133,478
| -62% | -$719K | ﹤0.01% | 2400 |
|
|
2023
Q4 | $932K | Buy |
215,172
+107,434
| +100% | +$356K | ﹤0.01% | 2123 |
|
|
2023
Q3 | $283K | Buy |
107,738
+1,665
| +2% | +$5.67K | ﹤0.01% | 2510 |
|
|
2023
Q2 | $374K | Sell |
106,073
-102,076
| -49% | -$318K | ﹤0.01% | 2442 |
|
|
2023
Q1 | $643K | Sell |
208,149
-75,801
| -27% | -$286K | ﹤0.01% | 2091 |
|
|
2022
Q4 | $1.2M | Buy |
283,950
+200,343
| +240% | +$691K | ﹤0.01% | 1612 |
|
|
2022
Q3 | $198K | Sell |
83,607
-70,597
| -46% | -$206K | ﹤0.01% | 2105 |
|
|
2022
Q2 | $439K | Sell |
154,204
-12,247
| -7% | -$30.4K | ﹤0.01% | 1878 |
|
|
2022
Q1 | $479K | Buy |
+166,451
| New | +$431K | ﹤0.01% | 2040 |
|
|
2021
Q4 | – | Sell |
-15,920
| Closed | -$112K | – | 4724 |
|
|
2021
Q3 | $112K | Sell |
15,920
-39,638
| -71% | -$297K | ﹤0.01% | 4072 |
|
|
2021
Q2 | $510K | Buy |
+55,558
| New | +$563K | ﹤0.01% | 3082 |
|
|
2019
Q3 | – | Sell |
-232,772
| Closed | -$2.96M | – | 3720 |
|
|
2019
Q2 | $2.96M | Buy |
232,772
+105,115
| +82% | +$2.42M | 0.01% | 1194 |
|
|
2019
Q1 | $4.95M | Buy |
127,657
+3,245
| +3% | +$99.1K | 0.02% | 965 |
|
|
2018
Q4 | $2.53M | Buy |
+124,412
| New | +$3.73M | 0.01% | 1131 |
|
|
2017
Q4 | – | Sell |
-1,786
| Closed | -$214K | – | 3368 |
|
|
2017
Q3 | $214K | Buy |
+1,786
| New | +$166K | ﹤0.01% | 2563 |
|
|
2015
Q3 | – | Sell |
-19,201
| Closed | -$2.24M | – | 2589 |
|
|
2015
Q2 | $2.24M | Buy |
+19,201
| New | +$3.48M | 0.01% | 1129 |
|
|
2014
Q4 | – | Sell |
-9,497
| Closed | -$2.27M | – | 2342 |
|
|
2014
Q3 | $2.27M | Buy |
+9,497
| New | +$1.95M | 0.01% | 834 |
|
|
2013
Q3 | – | Sell |
-14,073
| Closed | -$624K | – | 2039 |
|
|
2013
Q2 | $624K | Buy |
+14,073
| New | +$496K | ﹤0.01% | 1300 |
|
Other funds holding PBYI
ACA
John Overdeck's PBYI Position: Q2 2026 in Review
John Overdeck increased its Puma Biotechnology (PBYI) stake by 981% in Q2 2026, buying an estimated $934K and bringing the position to 140,587 shares worth $1.14M. The position accounts for ﹤0.01% of the portfolio, ranked #3509.
John Overdeck first reported a position in PBYI in Q2 2013 and has held it in 27 quarters since. The position peaked at $4.95M in Q1 2019. 160 funds tracked by Wall St. Rank hold PBYI as of Q2 2026.
- John Overdeck held 140,587 shares of Puma Biotechnology worth $1.14M as of Q2 2026.
- John Overdeck bought 127,587 Puma Biotechnology shares in Q2 2026, an estimated $934K.
- Puma Biotechnology made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #3509 holding.
- John Overdeck first reported a position in Puma Biotechnology in Q2 2013 and has held it in 27 quarters since.
- John Overdeck's Puma Biotechnology position peaked at $4.95M in Q1 2019.
- 160 funds tracked by Wall St. Rank held Puma Biotechnology as of Q2 2026.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.