Capital World Investors
TNDM icon

Capital World Investors’s Tandem Diabetes Care TNDM Stock Holding History

Capital World Investors’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
-767,000
Closed -$14.3M – 608
2025
Q2 		$14.3M Hold
767,000
– – ﹤0.01% 487
2025
Q1 		$14.7M Hold
767,000
– – ﹤0.01% 471
2024
Q4 		$27.6M Sell
767,000
-2,498,300
-77% -$84.5M ﹤0.01% 447
2024
Q3 		$138M Sell
3,265,300
-400,000
-11% -$17M 0.02% 315
2024
Q2 		$148M Hold
3,665,300
– – 0.02% 300
2024
Q1 		$130M Sell
3,665,300
-2,718,811
-43% -$72.8M 0.02% 321
2023
Q4 		$189M Sell
6,384,111
-161,227
-2% -$3.34M 0.03% 282
2023
Q3 		$136M Buy
6,545,338
+59,311
+0.9% +$1.63M 0.03% 304
2023
Q2 		$159M Buy
6,486,027
+529,497
+9% +$17M 0.03% 293
2023
Q1 		$242M Buy
5,956,530
+1,106,346
+23% +$45.8M 0.05% 261
2022
Q4 		$218M Buy
4,850,184
+294,581
+6% +$13.3M 0.05% 265
2022
Q3 		$218M Buy
4,555,603
+1,699,426
+60% +$93.2M 0.05% 259
2022
Q2 		$169M Buy
2,856,177
+9,925
+0.3% +$815K 0.04% 292
2022
Q1 		$331M Sell
2,846,252
-580,877
-17% -$67.8M 0.06% 246
2021
Q4 		$516M Buy
3,427,129
+133,133
+4% +$18M 0.08% 210
2021
Q3 		$393M Buy
3,293,996
+17,292
+0.5% +$1.91M 0.07% 236
2021
Q2 		$319M Buy
3,276,704
+188,425
+6% +$16.8M 0.05% 257
2021
Q1 		$273M Buy
3,088,279
+15,315
+0.5% +$1.42M 0.05% 259
2020
Q4 		$294M Buy
3,072,964
+1,518,075
+98% +$156M 0.06% 244
2020
Q3 		$176M Buy
1,554,889
+736,387
+90% +$77.4M 0.04% 277
2020
Q2 		$81M Buy
+818,502
New +$65.3M 0.02% 323

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

Capital World Investors's TNDM Position: Q3 2025 in Review

Capital World Investors sold out of Tandem Diabetes Care (TNDM) in Q3 2025, closing a stake of 767,000 shares — an estimated $14.3M sold.

Capital World Investors first reported a position in TNDM in Q2 2020 and held it in 21 quarters. The position peaked at $516M in Q4 2021. 255 funds tracked by Wall St. Rank hold TNDM as of Q3 2025.

  • Capital World Investors reported no remaining Tandem Diabetes Care position as of Q3 2025 after selling out during the quarter.
  • Capital World Investors sold 767,000 Tandem Diabetes Care shares in Q3 2025, an estimated $14.3M.
  • Capital World Investors first reported a position in Tandem Diabetes Care in Q2 2020 and held it in 21 quarters.
  • Capital World Investors's Tandem Diabetes Care position peaked at $516M in Q4 2021.
  • 255 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2025.

Based on Capital World Investors's 13F filing for Q3 2025, filed 13 Nov 2025.