Jane Street’s Tandem Diabetes Care TNDM Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | – | Sell |
-209,975
| Closed | -$4.56M | – | 12990 |
|
|
2025
Q4 | $4.62M | Sell |
209,975
-7,336
| -3% | -$132K | ﹤0.01% | 3358 |
|
|
2025
Q3 | $2.64M | Buy |
217,311
+127,203
| +141% | +$1.72M | ﹤0.01% | 4438 |
|
|
2025
Q2 | $1.68M | Buy |
+90,108
| New | +$1.78M | ﹤0.01% | 4715 |
|
|
2025
Q1 | – | Sell |
-31,251
| Closed | -$915K | – | 10611 |
|
|
2024
Q4 | $1.13M | Sell |
31,251
-84,136
| -73% | -$2.85M | ﹤0.01% | 5143 |
|
|
2024
Q3 | $4.89M | Buy |
115,387
+47,692
| +70% | +$2.02M | ﹤0.01% | 2896 |
|
|
2024
Q2 | $2.73M | Sell |
67,695
-240,404
| -78% | -$10M | ﹤0.01% | 3964 |
|
|
2024
Q1 | $10.9M | Buy |
308,099
+117,408
| +62% | +$3.15M | ﹤0.01% | 1731 |
|
|
2023
Q4 | $5.64M | Buy |
190,691
+143,982
| +308% | +$2.99M | ﹤0.01% | 2686 |
|
|
2023
Q3 | $970K | Buy |
46,709
+6,041
| +15% | +$166K | ﹤0.01% | 5226 |
|
|
2023
Q2 | $998K | Buy |
40,668
+4,054
| +11% | +$130K | ﹤0.01% | 5184 |
|
|
2023
Q1 | $1.49M | Sell |
36,614
-7,374
| -17% | -$305K | ﹤0.01% | 4320 |
|
|
2022
Q4 | $1.98M | Sell |
43,988
-304
| -0.7% | -$13.8K | ﹤0.01% | 3887 |
|
|
2022
Q3 | $2.12M | Buy |
44,292
+7,811
| +21% | +$428K | ﹤0.01% | 4114 |
|
|
2022
Q2 | $2.16M | Buy |
36,481
+18,870
| +107% | +$1.55M | ﹤0.01% | 4025 |
|
|
2022
Q1 | $2.05M | Buy |
17,611
+6,726
| +62% | +$785K | ﹤0.01% | 4710 |
|
|
2021
Q4 | $1.64M | Buy |
+10,885
| New | +$1.47M | ﹤0.01% | 4878 |
|
|
2021
Q3 | – | Sell |
-19,845
| Closed | -$2.19M | – | 10730 |
|
|
2021
Q2 | $1.93M | Buy |
19,845
+5,774
| +41% | +$515K | ﹤0.01% | 4401 |
|
|
2021
Q1 | $1.24M | Sell |
14,071
-7,309
| -34% | -$679K | ﹤0.01% | 5034 |
|
|
2020
Q4 | $2.05M | Sell |
21,380
-16,101
| -43% | -$1.66M | ﹤0.01% | 3445 |
|
|
2020
Q3 | $4.25M | Sell |
37,481
-131,181
| -78% | -$13.8M | ﹤0.01% | 2033 |
|
|
2020
Q2 | $16.7M | Buy |
168,662
+159,391
| +1,719% | +$12.7M | 0.01% | 853 |
|
|
2020
Q1 | $597K | Sell |
9,271
-23,892
| -72% | -$1.67M | ﹤0.01% | 3434 |
|
|
2019
Q4 | $1.98M | Buy |
+33,163
| New | +$2.05M | ﹤0.01% | 1952 |
|
|
2019
Q3 | – | Sell |
-32,166
| Closed | -$2.05M | – | 5756 |
|
|
2019
Q2 | $2.08M | Sell |
32,166
-81,392
| -72% | -$5.25M | ﹤0.01% | 1851 |
|
|
2019
Q1 | $7.21M | Buy |
113,558
+98,535
| +656% | +$5.18M | 0.01% | 888 |
|
|
2018
Q4 | $570K | Sell |
15,023
-13,970
| -48% | -$493K | ﹤0.01% | 3299 |
|
|
2018
Q3 | $1.24M | Buy |
+28,993
| New | +$1.01M | ﹤0.01% | 2484 |
|
|
2014
Q2 | – | Sell |
-3,310
| Closed | -$731K | – | 3118 |
|
|
2014
Q1 | $731K | Buy |
+3,310
| New | +$844K | 0.01% | 1232 |
|
Other funds holding TNDM
SC
FLAM
GKIM
PIM
Jane Street's TNDM Position: Q1 2026 in Review
Jane Street sold out of Tandem Diabetes Care (TNDM) in Q1 2026, closing a stake of 209,975 shares — an estimated $4.56M sold.
Jane Street first reported a position in TNDM in Q1 2014 and held it in 28 quarters. The position peaked at $16.7M in Q2 2020. 273 funds tracked by Wall St. Rank hold TNDM as of Q1 2026.
- Jane Street reported no remaining Tandem Diabetes Care position as of Q1 2026 after selling out during the quarter.
- Jane Street sold 209,975 Tandem Diabetes Care shares in Q1 2026, an estimated $4.56M.
- Jane Street first reported a position in Tandem Diabetes Care in Q1 2014 and held it in 28 quarters.
- Jane Street's Tandem Diabetes Care position peaked at $16.7M in Q2 2020.
- 273 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.