Jane Street’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
Q1 | $322K | Sell |
1,907
-112,844
| -98% | -$19.3M | ﹤0.01% | 9087 |
|
|
2025
Q4 | $19.4M | Sell |
114,751
-171,911
| -60% | -$27.9M | ﹤0.01% | 1649 |
|
|
2025
Q3 | $41.4M | Buy |
286,662
+280,048
| +4,234% | +$38.2M | 0.01% | 1065 |
|
|
2025
Q2 | $837K | Sell |
6,614
-249,550
| -97% | -$30.6M | ﹤0.01% | 5957 |
|
|
2025
Q1 | $32.8M | Sell |
256,164
-1,699,033
| -87% | -$230M | 0.01% | 940 |
|
|
2024
Q4 | $258M | Buy |
1,955,197
+518,931
| +36% | +$73M | 0.06% | 197 |
|
|
2024
Q3 | $209M | Buy |
1,436,266
+452,038
| +46% | +$65.4M | 0.05% | 217 |
|
|
2024
Q2 | $135M | Buy |
984,228
+879,388
| +839% | +$117M | 0.03% | 306 |
|
|
2024
Q1 | $14.4M | Buy |
+104,840
| New | +$14.3M | ﹤0.01% | 1472 |
|
|
2023
Q4 | – | Sell |
-215,522
| Closed | -$26.4M | – | 9446 |
|
|
2023
Q3 | $26.4M | Sell |
215,522
-11,192
| -5% | -$1.42M | 0.01% | 903 |
|
|
2023
Q2 | $28.8M | Sell |
226,714
-15,090
| -6% | -$1.96M | 0.01% | 910 |
|
|
2023
Q1 | $31.2M | Sell |
241,804
-760,750
| -76% | -$99.6M | 0.01% | 729 |
|
|
2022
Q4 | $132M | Buy |
1,002,554
+50,999
| +5% | +$6.59M | 0.06% | 226 |
|
|
2022
Q3 | $111M | Buy |
951,555
+95,541
| +11% | +$11.9M | 0.05% | 252 |
|
|
2022
Q2 | $101M | Buy |
856,014
+202,261
| +31% | +$24M | 0.04% | 313 |
|
|
2022
Q1 | $85.2M | Buy |
653,753
+488,689
| +296% | +$63.7M | 0.03% | 455 |
|
|
2021
Q4 | $25.2M | Buy |
165,064
+157,010
| +1,949% | +$24.3M | 0.01% | 1021 |
|
|
2021
Q3 | $1.3M | Sell |
8,054
-66,222
| -89% | -$11.1M | ﹤0.01% | 5376 |
|
|
2021
Q2 | $12.2M | Buy |
74,276
+70,506
| +1,870% | +$10.9M | ﹤0.01% | 1504 |
|
|
2021
Q1 | $568K | Sell |
3,770
-17,795
| -83% | -$2.83M | ﹤0.01% | 6570 |
|
|
2020
Q4 | $3.27M | Buy |
21,565
+18,336
| +568% | +$2.62M | ﹤0.01% | 2710 |
|
|
2020
Q3 | $437K | Sell |
3,229
-274,313
| -99% | -$37.2M | ﹤0.01% | 5352 |
|
|
2020
Q2 | $37.9M | Buy |
277,542
+199,077
| +254% | +$25.4M | 0.03% | 454 |
|
|
2020
Q1 | $8.45M | Buy |
78,465
+68,693
| +703% | +$7.91M | 0.01% | 851 |
|
|
2019
Q4 | $1.18M | Sell |
9,772
-262,850
| -96% | -$29.3M | ﹤0.01% | 2554 |
|
|
2019
Q3 | $27.1M | Sell |
272,622
-558
| -0.2% | -$58.4K | 0.04% | 285 |
|
|
2019
Q2 | $29.8M | Buy |
273,180
+255,220
| +1,421% | +$27.1M | 0.05% | 274 |
|
|
2019
Q1 | $2.01M | Buy |
17,960
+1,370
| +8% | +$150K | ﹤0.01% | 2020 |
|
|
2018
Q4 | $1.6M | Buy |
+16,590
| New | +$1.76M | ﹤0.01% | 1984 |
|
|
2018
Q3 | – | Sell |
-14,972
| Closed | -$1.76M | – | 5368 |
|
|
2018
Q2 | $1.64M | Sell |
14,972
-124,484
| -89% | -$13.3M | ﹤0.01% | 2171 |
|
|
2018
Q1 | $14.9M | Sell |
139,456
-172,089
| -55% | -$19.1M | 0.04% | 393 |
|
|
2017
Q4 | $33.3M | Sell |
311,545
-302,897
| -49% | -$32.4M | 0.1% | 184 |
|
|
2017
Q3 | $68.3M | Buy |
614,442
+484,518
| +373% | +$51.8M | 0.22% | 82 |
|
|
2017
Q2 | $13.4M | Sell |
129,924
-98,985
| -43% | -$9.75M | 0.05% | 342 |
|
|
2017
Q1 | $22.4M | Sell |
228,909
-312,714
| -58% | -$29.9M | 0.1% | 172 |
|
|
2016
Q4 | $47.9M | Buy |
541,623
+512,448
| +1,756% | +$46.6M | 0.21% | 83 |
|
|
2016
Q3 | $2.81M | Buy |
29,175
+24,609
| +539% | +$2.34M | 0.01% | 927 |
|
|
2016
Q2 | $392K | Sell |
4,566
-805,215
| -99% | -$72.2M | ﹤0.01% | 3006 |
|
|
2016
Q1 | $70.4M | Buy |
809,781
+750,747
| +1,272% | +$67.1M | 0.39% | 41 |
|
|
2015
Q4 | $6.66M | Sell |
59,034
-200,634
| -77% | -$21.8M | 0.04% | 387 |
|
|
2015
Q3 | $26.3M | Buy |
259,668
+183,372
| +240% | +$22M | 0.16% | 105 |
|
|
2015
Q2 | $9.38M | Buy |
76,296
+65,565
| +611% | +$7.85M | 0.06% | 263 |
|
|
2015
Q1 | $1.23M | Sell |
10,731
-358,881
| -97% | -$39.6M | 0.01% | 1221 |
|
|
2014
Q4 | $37.4M | Buy |
369,612
+365,790
| +9,571% | +$35.5M | 0.28% | 53 |
|
|
2014
Q3 | $349K | Buy |
+3,822
| New | +$335K | ﹤0.01% | 1758 |
|
|
2014
Q2 | – | Sell |
-51,000
| Closed | -$4.02M | – | 2812 |
|
|
2014
Q1 | $4.02M | Buy |
+51,000
| New | +$4.25M | 0.04% | 300 |
|
|
2013
Q3 | – | Sell |
-10,782
| Closed | -$706K | – | 2888 |
|
|
2013
Q2 | $625K | Buy |
+10,782
| New | +$623K | 0.01% | 1249 |
|
Other funds holding IBB
CB
Jane Street's IBB Position: Q1 2026 in Review
Jane Street reduced its iShares Biotechnology ETF (IBB) stake by 98% in Q1 2026, selling an estimated $19.3M and leaving 1,907 shares worth $322K. The position accounts for ﹤0.01% of the portfolio, ranked #9087.
Jane Street first reported a position in IBB in Q2 2013 and has held it in 47 quarters since. The position peaked at $258M in Q4 2024. 917 funds tracked by Wall St. Rank hold IBB as of Q1 2026.
- Jane Street held 1,907 shares of iShares Biotechnology ETF worth $322K as of Q1 2026.
- Jane Street sold 112,844 iShares Biotechnology ETF shares in Q1 2026, an estimated $19.3M.
- iShares Biotechnology ETF made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #9087 holding.
- Jane Street first reported a position in iShares Biotechnology ETF in Q2 2013 and has held it in 47 quarters since.
- Jane Street's iShares Biotechnology ETF position peaked at $258M in Q4 2024.
- 917 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.