Vanguard Group’s Tandem Diabetes Care TNDM Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | $161M | Buy |
7,341,356
+278,042
| +4% | +$5.02M | ﹤0.01% | 1655 |
|
|
2025
Q3 | $85.7M | Sell |
7,063,314
-306,516
| -4% | -$4.15M | ﹤0.01% | 1924 |
|
|
2025
Q2 | $137M | Buy |
7,369,830
+77,661
| +1% | +$1.54M | ﹤0.01% | 1693 |
|
|
2025
Q1 | $140M | Sell |
7,292,169
-147,836
| -2% | -$4.33M | ﹤0.01% | 1641 |
|
|
2024
Q4 | $268M | Buy |
7,440,005
+77,451
| +1% | +$2.62M | ﹤0.01% | 1399 |
|
|
2024
Q3 | $312M | Sell |
7,362,554
-15,448
| -0.2% | -$655K | 0.01% | 1306 |
|
|
2024
Q2 | $297M | Buy |
7,378,002
+325,432
| +5% | +$13.6M | 0.01% | 1265 |
|
|
2024
Q1 | $250M | Buy |
7,052,570
+30,664
| +0.4% | +$822K | ﹤0.01% | 1378 |
|
|
2023
Q4 | $208M | Buy |
7,021,906
+18,571
| +0.3% | +$385K | ﹤0.01% | 1488 |
|
|
2023
Q3 | $145M | Sell |
7,003,335
-9,568
| -0.1% | -$263K | ﹤0.01% | 1597 |
|
|
2023
Q2 | $172M | Sell |
7,012,903
-34,574
| -0.5% | -$1.11M | ﹤0.01% | 1545 |
|
|
2023
Q1 | $286M | Buy |
7,047,477
+920,248
| +15% | +$38.1M | 0.01% | 1246 |
|
|
2022
Q4 | $275M | Sell |
6,127,229
-67,047
| -1% | -$3.04M | 0.01% | 1242 |
|
|
2022
Q3 | $296M | Sell |
6,194,276
-179,317
| -3% | -$9.83M | 0.01% | 1142 |
|
|
2022
Q2 | $377M | Buy |
6,373,593
+66,869
| +1% | +$5.49M | 0.01% | 1031 |
|
|
2022
Q1 | $733M | Buy |
6,306,724
+146,577
| +2% | +$17.1M | 0.02% | 745 |
|
|
2021
Q4 | $927M | Buy |
6,160,147
+109,088
| +2% | +$14.7M | 0.02% | 685 |
|
|
2021
Q3 | $722M | Buy |
6,051,059
+446,554
| +8% | +$49.2M | 0.02% | 774 |
|
|
2021
Q2 | $546M | Buy |
5,604,505
+144,143
| +3% | +$12.9M | 0.01% | 942 |
|
|
2021
Q1 | $482M | Buy |
5,460,362
+192,974
| +4% | +$17.9M | 0.01% | 979 |
|
|
2020
Q4 | $504M | Buy |
5,267,388
+193,793
| +4% | +$20M | 0.01% | 875 |
|
|
2020
Q3 | $576M | Sell |
5,073,595
-101,061
| -2% | -$10.6M | 0.02% | 716 |
|
|
2020
Q2 | $512M | Sell |
5,174,656
-118,670
| -2% | -$9.47M | 0.02% | 754 |
|
|
2020
Q1 | $341M | Sell |
5,293,326
-192,106
| -4% | -$13.5M | 0.01% | 842 |
|
|
2019
Q4 | $327M | Buy |
5,485,432
+25,884
| +0.5% | +$1.6M | 0.01% | 1078 |
|
|
2019
Q3 | $322M | Sell |
5,459,548
-767,532
| -12% | -$49M | 0.01% | 1033 |
|
|
2019
Q2 | $402M | Buy |
6,227,080
+316,123
| +5% | +$20.4M | 0.02% | 907 |
|
|
2019
Q1 | $375M | Buy |
5,910,957
+247,975
| +4% | +$13M | 0.01% | 937 |
|
|
2018
Q4 | $215M | Buy |
5,662,982
+1,870,320
| +49% | +$66M | 0.01% | 1203 |
|
|
2018
Q3 | $162M | Buy |
3,792,662
+1,884,560
| +99% | +$65.8M | 0.01% | 1531 |
|
|
2018
Q2 | $42M | Buy |
1,908,102
+527,360
| +38% | +$6.48M | ﹤0.01% | 2214 |
|
|
2018
Q1 | $6.85M | Buy |
1,380,742
+1,274,255
| +1,197% | +$4.11M | ﹤0.01% | 3010 |
|
|
2017
Q4 | $251K | Sell |
106,487
-33,818
| -24% | -$106K | ﹤0.01% | 3892 |
|
|
2017
Q3 | $1.02M | Buy |
140,305
+16,944
| +14% | +$107K | ﹤0.01% | 3586 |
|
|
2017
Q2 | $987K | Buy |
123,361
+3,299
| +3% | +$30.5K | ﹤0.01% | 3570 |
|
|
2017
Q1 | $1.44M | Buy |
120,062
+77,348
| +181% | +$1.69M | ﹤0.01% | 3478 |
|
|
2016
Q4 | $919K | Sell |
42,714
-31,982
| -43% | -$1.23M | ﹤0.01% | 3584 |
|
|
2016
Q3 | $5.72M | Buy |
74,696
+808
| +1% | +$58.9K | ﹤0.01% | 2940 |
|
|
2016
Q2 | $5.57M | Buy |
73,888
+5,571
| +8% | +$448K | ﹤0.01% | 2922 |
|
|
2016
Q1 | $5.95M | Buy |
68,317
+3,898
| +6% | +$341K | ﹤0.01% | 2874 |
|
|
2015
Q4 | $7.61M | Buy |
64,419
+6,715
| +12% | +$666K | ﹤0.01% | 2782 |
|
|
2015
Q3 | $5.08M | Buy |
57,704
+7,297
| +14% | +$849K | ﹤0.01% | 2962 |
|
|
2015
Q2 | $5.46M | Buy |
50,407
+3,685
| +8% | +$458K | ﹤0.01% | 2976 |
|
|
2015
Q1 | $5.9M | Buy |
46,722
+16,148
| +53% | +$2.1M | ﹤0.01% | 2914 |
|
|
2014
Q4 | $3.88M | Buy |
30,574
+1,568
| +5% | +$217K | ﹤0.01% | 3022 |
|
|
2014
Q3 | $3.89M | Buy |
29,006
+8,217
| +40% | +$1.15M | ﹤0.01% | 2970 |
|
|
2014
Q2 | $3.38M | Buy |
20,789
+12,704
| +157% | +$2.16M | ﹤0.01% | 3027 |
|
|
2014
Q1 | $1.79M | Buy |
8,085
+23
| +0.3% | +$5.87K | ﹤0.01% | 3273 |
|
|
2013
Q4 | $2.08M | Buy |
+8,062
| New | +$1.84M | ﹤0.01% | 3170 |
|
Other funds holding TNDM
SC
ACH
GKIM
PIM
Vanguard Group's TNDM Position: Q4 2025 in Review
Vanguard Group increased its Tandem Diabetes Care (TNDM) stake by 3.9% in Q4 2025, buying an estimated $5.02M and bringing the position to 7,341,356 shares worth $161M. The position accounts for ﹤0.01% of the portfolio, ranked #1655.
Vanguard Group first reported a position in TNDM in Q4 2013 and has held it in 49 quarters since. The position peaked at $927M in Q4 2021. 268 funds tracked by Wall St. Rank hold TNDM as of Q4 2025.
- Vanguard Group held 7,341,356 shares of Tandem Diabetes Care worth $161M as of Q4 2025.
- Vanguard Group bought 278,042 Tandem Diabetes Care shares in Q4 2025, an estimated $5.02M.
- Tandem Diabetes Care made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #1655 holding.
- Vanguard Group first reported a position in Tandem Diabetes Care in Q4 2013 and has held it in 49 quarters since.
- Vanguard Group's Tandem Diabetes Care position peaked at $927M in Q4 2021.
- 268 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q4 2025.
Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.