D.E. Shaw & Co
TNDM icon

D.E. Shaw & Co’s Tandem Diabetes Care TNDM Stock Holding History

D.E. Shaw & Co’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
2026
Q1 		$15M Sell
783,906
-70,360
-8% -$1.53M 0.01% 1337
2025
Q4 		$18.8M Sell
854,266
-22,951
-3% -$414K 0.01% 1284
2025
Q3 		$10.6M Buy
877,217
+538,549
+159% +$7.29M 0.01% 1630
2025
Q2 		$6.31M Buy
+338,668
New +$6.71M ﹤0.01% 1848
2024
Q2 		– Sell
-71,432
Closed -$2.53M – 4845
2024
Q1 		$2.53M Sell
71,432
-21,708
-23% -$582K ﹤0.01% 2447
2023
Q4 		$2.76M Sell
93,140
-157,804
-63% -$3.27M ﹤0.01% 2416
2023
Q3 		$5.21M Sell
250,944
-351,116
-58% -$9.64M 0.01% 1776
2023
Q2 		$14.8M Buy
602,060
+356,493
+145% +$11.5M 0.02% 1064
2023
Q1 		$9.97M Buy
245,567
+93,572
+62% +$3.87M 0.01% 1374
2022
Q4 		$6.83M Buy
151,995
+129,592
+578% +$5.87M 0.01% 1801
2022
Q3 		$1.07M Sell
22,403
-4,886
-18% -$268K ﹤0.01% 3543
2022
Q2 		$1.61M Buy
27,289
+19,845
+267% +$1.63M ﹤0.01% 3251
2022
Q1 		$866K Sell
7,444
-11,478
-61% -$1.34M ﹤0.01% 4028
2021
Q4 		$2.85M Buy
18,922
+4,657
+33% +$629K ﹤0.01% 3021
2021
Q3 		$1.7M Sell
14,265
-929
-6% -$102K ﹤0.01% 3182
2021
Q2 		$1.48M Sell
15,194
-3,187
-17% -$284K ﹤0.01% 3224
2021
Q1 		$1.62M Sell
18,381
-12,697
-41% -$1.18M ﹤0.01% 2765
2020
Q4 		$2.97M Sell
31,078
-10,058
-24% -$1.04M ﹤0.01% 2280
2020
Q3 		$4.67M Buy
41,136
+22,844
+125% +$2.4M ﹤0.01% 1751
2020
Q2 		$1.81M Buy
18,292
+12,824
+235% +$1.02M ﹤0.01% 2496
2020
Q1 		$352K Buy
+5,468
New +$383K ﹤0.01% 3395
2019
Q4 		– Sell
-5,983
Closed -$369K – 4178
2019
Q3 		$353K Buy
+5,983
New +$382K ﹤0.01% 3373
2019
Q2 		– Sell
-519,524
Closed -$33.5M – 3872
2019
Q1 		$33M Buy
519,524
+483,553
+1,344% +$25.4M 0.04% 509
2018
Q4 		$1.37M Sell
35,971
-32,072
-47% -$1.13M ﹤0.01% 2443
2018
Q3 		$2.92M Buy
+68,043
New +$2.38M ﹤0.01% 1937
2017
Q3 		– Sell
-3,477
Closed -$28K – 3606
2017
Q2 		$28K Buy
3,477
+562
+19% +$5.2K ﹤0.01% 3321
2017
Q1 		$35K Sell
2,915
-4,747
-62% -$104K ﹤0.01% 3232
2016
Q4 		$165K Sell
7,662
-9,794
-56% -$377K ﹤0.01% 3296
2016
Q3 		$1.34M Buy
17,456
+10,738
+160% +$783K ﹤0.01% 2197
2016
Q2 		$507K Sell
6,718
-1,141
-15% -$91.8K ﹤0.01% 2790
2016
Q1 		$685K Buy
7,859
+1,282
+19% +$112K ﹤0.01% 2594
2015
Q4 		$777K Buy
+6,577
New +$652K ﹤0.01% 2821
2015
Q3 		– Sell
-7,449
Closed -$807K – 3893
2015
Q2 		$807K Buy
+7,449
New +$926K ﹤0.01% 2852

Other funds holding TNDM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
SC
Sessa Capital New York $5.51B AUM 47.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

D.E. Shaw & Co's TNDM Position: Q1 2026 in Review

D.E. Shaw & Co reduced its Tandem Diabetes Care (TNDM) stake by 8.2% in Q1 2026, selling an estimated $1.53M and leaving 783,906 shares worth $15M. The position accounts for 0.01% of the portfolio, ranked #1337.

D.E. Shaw & Co first reported a position in TNDM in Q2 2015 and has held it in 33 quarters since. The position peaked at $33M in Q1 2019. 272 funds tracked by Wall St. Rank hold TNDM as of Q1 2026.

  • D.E. Shaw & Co held 783,906 shares of Tandem Diabetes Care worth $15M as of Q1 2026.
  • D.E. Shaw & Co sold 70,360 Tandem Diabetes Care shares in Q1 2026, an estimated $1.53M.
  • Tandem Diabetes Care made up 0.01% of D.E. Shaw & Co's portfolio in Q1 2026, its #1337 holding.
  • D.E. Shaw & Co first reported a position in Tandem Diabetes Care in Q2 2015 and has held it in 33 quarters since.
  • D.E. Shaw & Co's Tandem Diabetes Care position peaked at $33M in Q1 2019.
  • 272 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q1 2026.

Based on D.E. Shaw & Co's 13F filing for Q1 2026, filed 15 May 2026.