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Fred Alger Management’s Tandem Diabetes Care TNDM Stock Holding History

Fred Alger 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
Q3 		– Sell
-667,345
Closed -$12.4M – 498
2025
Q2 		$12.4M Sell
667,345
-786,894
-54% -$15.6M 0.06% 155
2025
Q1 		$27.9M Sell
1,454,239
-489,117
-25% -$14.3M 0.16% 88
2024
Q4 		$70M Sell
1,943,356
-35,763
-2% -$1.21M 0.33% 49
2024
Q3 		$83.9M Sell
1,979,119
-194,988
-9% -$8.27M 0.41% 48
2024
Q2 		$87.6M Buy
2,174,107
+677,036
+45% +$28.2M 0.43% 50
2024
Q1 		$53M Buy
1,497,071
+1,194,292
+394% +$32M 0.26% 80
2023
Q4 		$8.96M Sell
302,779
-22,910
-7% -$475K 0.05% 191
2023
Q3 		$6.76M Buy
325,689
+110,049
+51% +$3.02M 0.04% 207
2023
Q2 		$5.29M Sell
215,640
-8,768
-4% -$282K 0.03% 245
2023
Q1 		$9.11M Buy
224,408
+79,241
+55% +$3.28M 0.05% 207
2022
Q4 		$6.53M Sell
145,167
-34,506
-19% -$1.56M 0.04% 243
2022
Q3 		$8.6M Buy
179,673
+34,583
+24% +$1.9M 0.04% 217
2022
Q2 		$8.59M Sell
145,090
-3,522
-2% -$289K 0.04% 222
2022
Q1 		$17.3M Sell
148,612
-728
-0.5% -$85K 0.06% 188
2021
Q4 		$22.5M Sell
149,340
-4,894
-3% -$661K 0.06% 204
2021
Q3 		$18.4M Sell
154,234
-18,658
-11% -$2.06M 0.04% 205
2021
Q2 		$16.8M Sell
172,892
-2,092
-1% -$187K 0.04% 217
2021
Q1 		$15.4M Sell
174,984
-1,150,967
-87% -$107M 0.04% 221
2020
Q4 		$127M Sell
1,325,951
-63,116
-5% -$6.5M 0.33% 100
2020
Q3 		$158M Buy
1,389,067
+95,286
+7% +$10M 0.46% 62
2020
Q2 		$128M Buy
1,293,781
+357,570
+38% +$28.5M 0.42% 64
2020
Q1 		$60.2M Sell
936,211
-498,795
-35% -$34.9M 0.26% 92
2019
Q4 		$85.5M Sell
1,435,006
-526,697
-27% -$32.5M 0.31% 87
2019
Q3 		$116M Sell
1,961,703
-215,252
-10% -$13.7M 0.45% 56
2019
Q2 		$140M Sell
2,176,955
-464,927
-18% -$30M 0.54% 53
2019
Q1 		$168M Sell
2,641,882
-542,198
-17% -$28.5M 0.67% 36
2018
Q4 		$121M Sell
3,184,080
-187,292
-6% -$6.61M 0.56% 40
2018
Q3 		$144M Buy
3,371,372
+1,401,188
+71% +$48.9M 0.54% 39
2018
Q2 		$43.4M Buy
1,970,184
+1,950,184
+9,751% +$24M 0.18% 98
2018
Q1 		$99K Buy
+20,000
New +$64.5K ﹤0.01% 407
2016
Q4 		– Sell
-2,000
Closed -$153K – 525
2016
Q3 		$153K Buy
+2,000
New +$146K ﹤0.01% 382

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
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return
GKIM
GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 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
PIM
Paradice Investment Management Denver, Colorado $532M AUM 29.6% 1-Year Est. Return
FGP
Freestone Grove Partners San Francisco, California $14.2B AUM 24.58% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Fred Alger Management's TNDM Position: Q3 2025 in Review

Fred Alger Management sold out of Tandem Diabetes Care (TNDM) in Q3 2025, closing a stake of 667,345 shares — an estimated $12.4M sold.

Fred Alger Management first reported a position in TNDM in Q3 2016 and held it in 31 quarters. The position peaked at $168M in Q1 2019. 255 funds tracked by Wall St. Rank hold TNDM as of Q3 2025.

  • Fred Alger Management reported no remaining Tandem Diabetes Care position as of Q3 2025 after selling out during the quarter.
  • Fred Alger Management sold 667,345 Tandem Diabetes Care shares in Q3 2025, an estimated $12.4M.
  • Fred Alger Management first reported a position in Tandem Diabetes Care in Q3 2016 and held it in 31 quarters.
  • Fred Alger Management's Tandem Diabetes Care position peaked at $168M in Q1 2019.
  • 255 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2025.

Based on Fred Alger Management's 13F filing for Q3 2025, filed 14 Nov 2025.