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Michael Gelband’s Tandem Diabetes Care TNDM Stock Holding History

Michael Gelband’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 		$10.4M Buy
691,789
+58,890
+9% +$1.03M 0.07% 280
2026
Q1 		$12.1M Buy
+632,899
New +$13.8M 0.1% 194
2025
Q3 		– Sell
-417,308
Closed -$7.78M – 2022
2025
Q2 		$7.78M Buy
417,308
+401,322
+2,510% +$7.95M 0.07% 303
2025
Q1 		$306K Sell
15,986
-238,071
-94% -$6.97M ﹤0.01% 1225
2024
Q4 		$9.15M Buy
254,057
+195,194
+332% +$6.6M 0.06% 292
2024
Q3 		$2.5M Sell
58,863
-59,690
-50% -$2.53M 0.02% 646
2024
Q2 		$4.78M Buy
+118,553
New +$4.95M 0.03% 420
2023
Q4 		– Sell
-62,133
Closed -$1.29M – 2052
2023
Q3 		$1.29M Sell
62,133
-73,229
-54% -$2.01M 0.01% 858
2023
Q2 		$3.32M Buy
135,362
+12,279
+10% +$395K 0.03% 596
2023
Q1 		$5M Buy
123,083
+84,620
+220% +$3.5M 0.04% 517
2022
Q4 		$1.73M Buy
38,463
+25,054
+187% +$1.13M 0.03% 710
2022
Q3 		$642K Sell
13,409
-111,116
-89% -$6.09M 0.01% 1278
2022
Q2 		$7.37M Buy
124,525
+61,558
+98% +$5.05M 0.09% 276
2022
Q1 		$7.32M Buy
62,967
+22,659
+56% +$2.65M 0.09% 275
2021
Q4 		$6.07M Sell
40,308
-2,650
-6% -$358K 0.06% 364
2021
Q3 		$5.13M Sell
42,958
-27,154
-39% -$2.99M 0.07% 390
2021
Q2 		$6.83M Buy
70,112
+10,745
+18% +$958K 0.08% 242
2021
Q1 		$5.24M Buy
+59,367
New +$5.52M 0.08% 253
2020
Q3 		– Sell
-118,095
Closed -$11.7M – 2231
2020
Q2 		$11.7M Buy
118,095
+109,644
+1,297% +$8.75M 0.3% 53
2020
Q1 		$544K Sell
8,451
-4,154
-33% -$291K 0.03% 459
2019
Q4 		$751K Sell
12,605
-30,073
-70% -$1.85M 0.01% 668
2019
Q3 		$2.52M Buy
42,678
+39,578
+1,277% +$2.53M 0.09% 192
2019
Q2 		$200K Buy
+3,100
New +$200K 0.01% 930

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

Michael Gelband's TNDM Position: Q2 2026 in Review

Michael Gelband increased its Tandem Diabetes Care (TNDM) stake by 9.3% in Q2 2026, buying an estimated $1.03M and bringing the position to 691,789 shares worth $10.4M. The position accounts for 0.07% of the portfolio, ranked #280.

Michael Gelband first reported a position in TNDM in Q2 2019 and has held it in 23 quarters since. The position peaked at $12.1M in Q1 2026. 272 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

  • Michael Gelband held 691,789 shares of Tandem Diabetes Care worth $10.4M as of Q2 2026.
  • Michael Gelband bought 58,890 Tandem Diabetes Care shares in Q2 2026, an estimated $1.03M.
  • Tandem Diabetes Care made up 0.07% of Michael Gelband's portfolio in Q2 2026, its #280 holding.
  • Michael Gelband first reported a position in Tandem Diabetes Care in Q2 2019 and has held it in 23 quarters since.
  • Michael Gelband's Tandem Diabetes Care position peaked at $12.1M in Q1 2026.
  • 272 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on ExodusPoint Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.