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Kingdon Capital Management’s Tandem Diabetes Care TNDM Stock Holding History

Kingdon Capital Management’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
2025
Q2 		– Sell
-495,229
Closed -$9.49M – 88
2025
Q1 		$9.49M Sell
495,229
-295,318
-37% -$8.64M 1% 31
2024
Q4 		$28.5M Buy
790,547
+260,547
+49% +$8.81M 4.06% 1
2024
Q3 		$22.5M Buy
530,000
+161,000
+44% +$6.83M 2.49% 6
2024
Q2 		$14.9M Sell
369,000
-124,080
-25% -$5.18M 1.59% 19
2024
Q1 		$17.5M Buy
493,080
+298,880
+154% +$8.01M 1.91% 13
2023
Q4 		$5.74M Buy
+194,200
New +$4.03M 0.72% 51
2022
Q3 		– Sell
-118,500
Closed -$7.01M – 87
2022
Q2 		$7.01M Sell
118,500
-53,900
-31% -$4.42M 1.19% 26
2022
Q1 		$20M Buy
172,400
+22,400
+15% +$2.62M 2.09% 13
2021
Q4 		$22.6M Buy
150,000
+39,000
+35% +$5.26M 2.6% 9
2021
Q3 		$13.3M Buy
+111,000
New +$12.2M 1.61% 16

Other funds holding TNDM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SC
Sessa Capital New York $5.51B AUM 47.23% 1-Year Est. Return
GKIM
GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 1-Year Est. Return
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
HRCM
Hood River Capital Management Palm Beach Gardens, Florida $9.98B AUM 145.42% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
PIM
Paradice Investment Management Denver, Colorado $532M AUM 29.6% 1-Year Est. Return
SIMG
Stephens Investment Management Group Houston, Texas $7.3B AUM 41.96% 1-Year Est. Return

Kingdon Capital Management's TNDM Position: Q2 2025 in Review

Kingdon Capital Management sold out of Tandem Diabetes Care (TNDM) in Q2 2025, closing a stake of 495,229 shares — an estimated $9.49M sold.

Kingdon Capital Management first reported a position in TNDM in Q3 2021 and held it in 10 quarters. The position peaked at $28.5M in Q4 2024. 270 funds tracked by Wall St. Rank hold TNDM as of Q2 2025.

  • Kingdon Capital Management reported no remaining Tandem Diabetes Care position as of Q2 2025 after selling out during the quarter.
  • Kingdon Capital Management sold 495,229 Tandem Diabetes Care shares in Q2 2025, an estimated $9.49M.
  • Kingdon Capital Management first reported a position in Tandem Diabetes Care in Q3 2021 and held it in 10 quarters.
  • Kingdon Capital Management's Tandem Diabetes Care position peaked at $28.5M in Q4 2024.
  • 270 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2025.

Based on Kingdon Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.