John Overdeck’s iShares Biotechnology ETF IBB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $302M | Buy |
1,588,107
+1,030,300
| +185% | +$177M | 0.22% | 91 |
|
|
2026
Q1 | $94.2M | Sell |
557,807
-917,200
| -62% | -$157M | 0.08% | 292 |
|
|
2025
Q4 | $249M | Buy |
1,475,007
+1,409,300
| +2,145% | +$229M | 0.35% | 27 |
|
|
2025
Q3 | $9.49M | Buy |
+65,707
| New | +$8.97M | 0.01% | 990 |
|
|
2025
Q2 | – | Sell |
-277,807
| Closed | -$35.5M | – | 3334 |
|
|
2025
Q1 | $35.5M | Buy |
277,807
+43,200
| +18% | +$5.86M | 0.08% | 306 |
|
|
2024
Q4 | $31M | Sell |
234,607
-49,600
| -17% | -$6.97M | 0.07% | 355 |
|
|
2024
Q3 | $41.4M | Sell |
284,207
-139,200
| -33% | -$20.1M | 0.09% | 279 |
|
|
2024
Q2 | $58.1M | Buy |
423,407
+116,200
| +38% | +$15.5M | 0.13% | 178 |
|
|
2024
Q1 | $42.2M | Buy |
+307,207
| New | +$42M | 0.1% | 263 |
|
|
2023
Q3 | – | Sell |
-136,807
| Closed | -$17.4M | – | 3068 |
|
|
2023
Q2 | $17.4M | Buy |
136,807
+19,000
| +16% | +$2.47M | 0.04% | 447 |
|
|
2023
Q1 | $15.2M | Sell |
117,807
-121,100
| -51% | -$15.9M | 0.04% | 449 |
|
|
2022
Q4 | $31.4M | Buy |
238,907
+182,200
| +321% | +$23.5M | 0.1% | 246 |
|
|
2022
Q3 | $6.63M | Buy |
+56,707
| New | +$7.04M | 0.02% | 645 |
|
|
2022
Q2 | – | Sell |
-272,501
| Closed | -$35.5M | – | 2704 |
|
|
2022
Q1 | $35.5M | Sell |
272,501
-267,506
| -50% | -$34.8M | 0.1% | 239 |
|
|
2021
Q4 | $82.4M | Sell |
540,007
-100,838
| -16% | -$15.6M | 0.18% | 142 |
|
|
2021
Q3 | $104M | Buy |
640,845
+219,538
| +52% | +$36.9M | 0.23% | 107 |
|
|
2021
Q2 | $68.9M | Buy |
421,307
+22,100
| +6% | +$3.4M | 0.16% | 153 |
|
|
2021
Q1 | $60.1M | Buy |
399,207
+185,100
| +86% | +$29.4M | 0.16% | 141 |
|
|
2020
Q4 | $32.4M | Buy |
214,107
+210,162
| +5,327% | +$30M | 0.09% | 248 |
|
|
2020
Q3 | $534K | Sell |
3,945
-62,215
| -94% | -$8.44M | ﹤0.01% | 2198 |
|
|
2020
Q2 | $9.04M | Buy |
+66,160
| New | +$8.43M | 0.04% | 423 |
|
|
2020
Q1 | – | Sell |
-640,760
| Closed | -$73.8M | – | 3435 |
|
|
2019
Q4 | $77.2M | Buy |
640,760
+208,756
| +48% | +$23.3M | 0.23% | 92 |
|
|
2019
Q3 | $43M | Buy |
432,004
+258,155
| +148% | +$27M | 0.14% | 181 |
|
|
2019
Q2 | $19M | Buy |
173,849
+995
| +0.6% | +$106K | 0.06% | 368 |
|
|
2019
Q1 | $19.3M | Sell |
172,854
-43,453
| -20% | -$4.77M | 0.06% | 415 |
|
|
2018
Q4 | $20.9M | Sell |
216,307
-133,304
| -38% | -$14.1M | 0.08% | 322 |
|
|
2018
Q3 | $42.6M | Buy |
+349,611
| New | +$41.2M | 0.12% | 246 |
|
|
2018
Q2 | – | Sell |
-6,000
| Closed | -$642K | – | 3462 |
|
|
2018
Q1 | $640K | Sell |
6,000
-281,131
| -98% | -$31.2M | ﹤0.01% | 2311 |
|
|
2017
Q4 | $30.7M | Buy |
287,131
+245,131
| +584% | +$26.2M | 0.1% | 270 |
|
|
2017
Q3 | $4.67M | Buy |
+42,000
| New | +$4.49M | 0.02% | 842 |
|
|
2017
Q1 | – | Sell |
-206,673
| Closed | -$18.3M | – | 3075 |
|
|
2016
Q4 | $18.3M | Buy |
206,673
+93,621
| +83% | +$8.52M | 0.07% | 334 |
|
|
2016
Q3 | $10.9M | Buy |
113,052
+106,452
| +1,613% | +$10.1M | 0.04% | 514 |
|
|
2016
Q2 | $566K | Sell |
6,600
-101,712
| -94% | -$9.13M | ﹤0.01% | 2165 |
|
|
2016
Q1 | $9.42M | Buy |
+108,312
| New | +$9.69M | 0.04% | 464 |
|
|
2015
Q4 | – | Sell |
-518,277
| Closed | -$52.4M | – | 2797 |
|
|
2015
Q3 | $52.4M | Buy |
518,277
+429,171
| +482% | +$51.5M | 0.27% | 106 |
|
|
2015
Q2 | $11M | Buy |
+89,106
| New | +$10.7M | 0.05% | 422 |
|
|
2014
Q2 | – | Sell |
-609,672
| Closed | -$48.1M | – | 2232 |
|
|
2014
Q1 | $48.1M | Buy |
+609,672
| New | +$50.8M | 0.26% | 92 |
|
Other funds holding IBB
CB
John Overdeck's IBB Position: Q2 2026 in Review
John Overdeck increased its iShares Biotechnology ETF (IBB) stake by 185% in Q2 2026, buying an estimated $177M and bringing the position to 1,588,107 shares worth $302M. The position accounts for 0.22% of the portfolio, ranked #91.
John Overdeck first reported a position in IBB in Q1 2014 and has held it in 37 quarters since. 954 funds tracked by Wall St. Rank hold IBB as of Q2 2026.
- John Overdeck held 1,588,107 shares of iShares Biotechnology ETF worth $302M as of Q2 2026.
- John Overdeck bought 1,030,300 iShares Biotechnology ETF shares in Q2 2026, an estimated $177M.
- iShares Biotechnology ETF made up 0.22% of John Overdeck's portfolio in Q2 2026, its #91 holding.
- John Overdeck first reported a position in iShares Biotechnology ETF in Q1 2014 and has held it in 37 quarters since.
- 954 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q2 2026.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.