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Shell Asset Management’s Tandem Diabetes Care TNDM Stock Holding History

Shell Asset 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 		$47K Sell
3,878
-18,974
-83% -$257K ﹤0.01% 886
2025
Q2 		$426K Sell
22,852
-2,429
-10% -$48.1K 0.01% 534
2025
Q1 		$484K Sell
25,281
-1,000
-4% -$29.3K 0.02% 477
2024
Q4 		$947K Buy
26,281
+3,803
+17% +$129K 0.04% 326
2024
Q3 		$953K Buy
+22,478
New +$953K 0.04% 321
2024
Q1 		$1.32M Buy
32,841
+17,571
+115% +$471K 0.06% 260
2023
Q4 		$452K Sell
15,270
-4,579
-23% -$95K 0.02% 550
2023
Q3 		$412K Sell
19,849
-345
-2% -$9.47K 0.02% 637
2023
Q2 		$496K Sell
20,194
-115
-0.6% -$3.7K 0.02% 578
2023
Q1 		$825K Buy
20,309
+9,536
+89% +$395K 0.03% 407
2022
Q4 		$484K Buy
10,773
+8,294
+335% +$375K 0.02% 550
2022
Q3 		$119K Sell
2,479
-327
-12% -$17.9K ﹤0.01% 1167
2022
Q2 		$166K Buy
2,806
+4
+0.1% +$328 ﹤0.01% 1165
2022
Q1 		$326K Buy
+2,802
New +$327K 0.01% 1009
2021
Q2 		– Sell
-3,840
Closed -$339K – 1555
2021
Q1 		$339K Hold
3,840
– – 0.01% 997
2020
Q4 		$367K Sell
3,840
-610
-14% -$62.9K 0.01% 923
2020
Q3 		$505K Hold
4,450
– – 0.01% 670
2020
Q2 		$440K Sell
4,450
-84
-2% -$6.7K 0.01% 720
2020
Q1 		$292K Sell
4,534
-69
-1% -$4.83K 0.01% 881
2019
Q4 		$274K Sell
4,603
-133
-3% -$8.2K 0.01% 1072
2019
Q3 		$279K Buy
+4,736
New +$302K 0.01% 1074

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

Shell Asset Management's TNDM Position: Q3 2025 in Review

Shell Asset Management reduced its Tandem Diabetes Care (TNDM) stake by 83% in Q3 2025, selling an estimated $257K and leaving 3,878 shares worth $47K. The position accounts for ﹤0.01% of the portfolio, ranked #886.

Shell Asset Management first reported a position in TNDM in Q3 2019 and has held it in 21 quarters since. The position peaked at $1.32M in Q1 2024. 255 funds tracked by Wall St. Rank hold TNDM as of Q3 2025.

  • Shell Asset Management held 3,878 shares of Tandem Diabetes Care worth $47K as of Q3 2025.
  • Shell Asset Management sold 18,974 Tandem Diabetes Care shares in Q3 2025, an estimated $257K.
  • Tandem Diabetes Care made up ﹤0.01% of Shell Asset Management's portfolio in Q3 2025, its #886 holding.
  • Shell Asset Management first reported a position in Tandem Diabetes Care in Q3 2019 and has held it in 21 quarters since.
  • Shell Asset Management's Tandem Diabetes Care position peaked at $1.32M in Q1 2024.
  • 255 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2025.

Based on Shell Asset Management's 13F filing for Q3 2025, filed 7 Nov 2025.