JF
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Jump Financial’s Tandem Diabetes Care TNDM Stock Holding History

Jump Financial’s Portfolio TNDM Stock Details TNDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$6.1M Buy
+404,400
New +$7.06M 0.05% 434
2026
Q1 		– Sell
-41,416
Closed -$910K – 2401
2025
Q4 		$910K Sell
41,416
-77,028
-65% -$1.39M 0.01% 1009
2025
Q3 		$1.44M Sell
118,444
-44,506
-27% -$602K 0.02% 850
2025
Q2 		$3.04M Buy
+162,950
New +$3.23M 0.03% 586
2025
Q1 		– Sell
-37,710
Closed -$1.36M – 2018
2024
Q4 		$1.36M Buy
+37,710
New +$1.28M 0.03% 645
2024
Q3 		– Sell
-8,887
Closed -$358K – 2120
2024
Q2 		$358K Sell
8,887
-71,180
-89% -$2.97M 0.01% 1295
2024
Q1 		$2.84M Buy
80,067
+40,967
+105% +$1.1M 0.08% 305
2023
Q4 		$1.16M Sell
39,100
-165,130
-81% -$3.43M 0.04% 639
2023
Q3 		$4.24M Buy
204,230
+41,060
+25% +$1.13M 0.16% 143
2023
Q2 		$4M Buy
163,170
+19,021
+13% +$612K 0.15% 168
2023
Q1 		$5.85M Buy
144,149
+122,400
+563% +$5.07M 0.24% 119
2022
Q4 		$978K Buy
21,749
+14,232
+189% +$644K 0.05% 497
2022
Q3 		$361K Sell
7,517
-48,983
-87% -$2.69M 0.01% 1045
2022
Q2 		$3.34M Buy
56,500
+48,831
+637% +$4.01M 0.14% 193
2022
Q1 		$892K Buy
+7,669
New +$895K 0.04% 569
2021
Q3 		– Sell
-5,423
Closed -$529K – 1503
2021
Q2 		$529K Buy
+5,423
New +$484K 0.05% 458
2021
Q1 		– Sell
-6,200
Closed -$593K – 1281
2020
Q4 		$593K Buy
6,200
+4,271
+221% +$440K 0.1% 323
2020
Q3 		$219K Buy
+1,929
New +$203K 0.04% 613

Other funds holding TNDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SC
Sessa Capital New York $5.98B AUM 99.85% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
FLAM
First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
GKIM
GW&K Investment Management Boston, Massachusetts $12.8B AUM 48.82% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return
PIM
Paradice Investment Management Denver, Colorado $627M AUM 43.41% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Jump Financial's TNDM Position: Q2 2026 in Review

Jump Financial opened a new position in Tandem Diabetes Care (TNDM) in Q2 2026: 404,400 shares worth $6.1M. The stake represents 0.05% of the portfolio and ranks #434 among its holdings. This is a return to the name: Jump Financial previously reported a position in TNDM as recently as Q4 2025.

Jump Financial first reported a position in TNDM in Q3 2020 and has held it in 18 quarters since. 274 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

  • Jump Financial held 404,400 shares of Tandem Diabetes Care worth $6.1M as of Q2 2026.
  • Tandem Diabetes Care was a new Jump Financial position in Q2 2026.
  • Tandem Diabetes Care made up 0.05% of Jump Financial's portfolio in Q2 2026, its #434 holding.
  • Jump Financial first reported a position in Tandem Diabetes Care in Q3 2020 and has held it in 18 quarters since.
  • 274 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on Jump Financial's 13F filing for Q2 2026, filed 13 Aug 2026.