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PDT Partners’s Tandem Diabetes Care TNDM Stock Holding History

PDT Partners’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 		$269K Sell
17,844
-75,961
-81% -$1.33M 0.01% 453
2026
Q1 		$1.8M Sell
93,805
-16,580
-15% -$360K 0.11% 259
2025
Q4 		$2.43M Sell
110,385
-60,035
-35% -$1.08M 0.16% 217
2025
Q3 		$2.07M Hold
170,420
– – 0.13% 245
2025
Q2 		$3.18M Buy
+170,420
New +$3.38M 0.18% 198
2023
Q2 		– Sell
-17,886
Closed -$726K – 652
2023
Q1 		$726K Sell
17,886
-11,724
-40% -$485K 0.1% 330
2022
Q4 		$1.33M Buy
29,610
+15,850
+115% +$718K 0.22% 163
2022
Q3 		$658K Buy
+13,760
New +$754K 0.1% 351
2022
Q2 		– Sell
-26,756
Closed -$3.11M – 1157
2022
Q1 		$3.11M Sell
26,756
-1,464
-5% -$171K 0.27% 91
2021
Q4 		$4.25M Sell
28,220
-22,783
-45% -$3.08M 0.32% 82
2021
Q3 		$6.09M Sell
51,003
-8,200
-14% -$903K 0.44% 19
2021
Q2 		$5.77M Sell
59,203
-2,679
-4% -$239K 0.38% 36
2021
Q1 		$5.46M Sell
61,882
-11,367
-16% -$1.06M 0.39% 26
2020
Q4 		$7.01M Buy
73,249
+18,448
+34% +$1.9M 0.47% 26
2020
Q3 		$6.22M Sell
54,801
-11,208
-17% -$1.18M 0.41% 89
2020
Q2 		$6.53M Buy
+66,009
New +$5.27M 0.44% 86
2015
Q3 		– Sell
-2,694
Closed -$292K – 1563
2015
Q2 		$292K Buy
+2,694
New +$335K 0.01% 1140
2014
Q4 		– Sell
-1,722
Closed -$231K – 1073
2014
Q3 		$231K Buy
+1,722
New +$241K 0.01% 1150
2014
Q2 		– Sell
-1,860
Closed -$411K – 1635
2014
Q1 		$411K Buy
+1,860
New +$474K 0.01% 1034

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

PDT Partners's TNDM Position: Q2 2026 in Review

PDT Partners reduced its Tandem Diabetes Care (TNDM) stake by 81% in Q2 2026, selling an estimated $1.33M and leaving 17,844 shares worth $269K. The position accounts for 0.01% of the portfolio, ranked #453.

PDT Partners first reported a position in TNDM in Q1 2014 and has held it in 19 quarters since. The position peaked at $7.01M in Q4 2020. 274 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

  • PDT Partners held 17,844 shares of Tandem Diabetes Care worth $269K as of Q2 2026.
  • PDT Partners sold 75,961 Tandem Diabetes Care shares in Q2 2026, an estimated $1.33M.
  • Tandem Diabetes Care made up 0.01% of PDT Partners's portfolio in Q2 2026, its #453 holding.
  • PDT Partners first reported a position in Tandem Diabetes Care in Q1 2014 and has held it in 19 quarters since.
  • PDT Partners's Tandem Diabetes Care position peaked at $7.01M in Q4 2020.
  • 274 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on PDT Partners's 13F filing for Q2 2026, filed 14 Aug 2026.