Two Sigma Investments
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Two Sigma Investments’s Tandem Diabetes Care TNDM Stock Holding History

Two Sigma Investments’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
2022
Q1 		– Sell
-4,500
Closed -$677K – 4267
2021
Q4 		$677K Sell
4,500
-1,900
-30% -$256K ﹤0.01% 2935
2021
Q3 		$764K Sell
6,400
-12,600
-66% -$1.39M ﹤0.01% 2873
2021
Q2 		$1.85M Buy
19,000
+9,200
+94% +$820K ﹤0.01% 1936
2021
Q1 		$865K Sell
9,800
-34,600
-78% -$3.22M ﹤0.01% 2454
2020
Q4 		$4.25M Buy
44,400
+10,400
+31% +$1.07M 0.01% 1027
2020
Q3 		$3.86M Buy
34,000
+10,600
+45% +$1.11M 0.01% 930
2020
Q2 		$2.31M Sell
23,400
-11,900
-34% -$950K 0.01% 1024
2020
Q1 		$2.27M Buy
35,300
+22,900
+185% +$1.6M 0.02% 900
2019
Q4 		$739K Sell
12,400
-6,000
-33% -$370K ﹤0.01% 2472
2019
Q3 		$1.08M Buy
18,400
+9,800
+114% +$626K ﹤0.01% 1920
2019
Q2 		$555K Buy
+8,600
New +$555K ﹤0.01% 2414
2019
Q1 		– Sell
-22,100
Closed -$839K – 3473
2018
Q4 		$839K Buy
+22,100
New +$780K ﹤0.01% 1761

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 $3.38T AUM 44.17% 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

Two Sigma Investments's TNDM Position: Q2 2026 in Review

Two Sigma Investments reduced its Tandem Diabetes Care (TNDM) stake by 70% in Q2 2026, selling an estimated $22.8M and leaving 558,409 shares worth $8.43M. The position accounts for 0.01% of the portfolio, ranked #1652.

Two Sigma Investments first reported a position in TNDM in Q1 2014 and has held it in 30 quarters since. The position peaked at $56.7M in Q1 2019. 274 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

  • Two Sigma Investments held 558,409 shares of Tandem Diabetes Care worth $8.43M as of Q2 2026.
  • Two Sigma Investments sold 1,305,785 Tandem Diabetes Care shares in Q2 2026, an estimated $22.8M.
  • Tandem Diabetes Care made up 0.01% of Two Sigma Investments's portfolio in Q2 2026, its #1652 holding.
  • Two Sigma Investments first reported a position in Tandem Diabetes Care in Q1 2014 and has held it in 30 quarters since.
  • Two Sigma Investments's Tandem Diabetes Care position peaked at $56.7M in Q1 2019.
  • 274 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.