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Oppenheimer & Co’s Tandem Diabetes Care TNDM Stock Holding History

Oppenheimer & 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
2025
Q1 		– Sell
-6,922
Closed -$249K – 1664
2024
Q4 		$249K Sell
6,922
-19,203
-74% -$650K ﹤0.01% 1359
2024
Q3 		$1.11M Buy
26,125
+20,549
+369% +$871K 0.02% 762
2024
Q2 		$225K Sell
5,576
-2,823
-34% -$118K ﹤0.01% 1304
2024
Q1 		$297K Sell
8,399
-1,400
-14% -$37.5K ﹤0.01% 1187
2023
Q4 		$290K Buy
+9,799
New +$203K 0.01% 1158
2022
Q4 		– Sell
-4,536
Closed -$217K – 1431
2022
Q3 		$217K Sell
4,536
-5,552
-55% -$304K 0.01% 1195
2022
Q2 		$597K Buy
10,088
+2,240
+29% +$184K 0.01% 855
2022
Q1 		$912K Buy
7,848
+2,812
+56% +$328K 0.02% 777
2021
Q4 		$758K Sell
5,036
-1,305
-21% -$176K 0.01% 888
2021
Q3 		$757K Sell
6,341
-2,009
-24% -$221K 0.01% 843
2021
Q2 		$813K Buy
8,350
+2,599
+45% +$232K 0.01% 830
2021
Q1 		$508K Buy
5,751
+312
+6% +$29K 0.01% 957
2020
Q4 		$521K Sell
5,439
-3,263
-37% -$336K 0.01% 869
2020
Q3 		$988K Sell
8,702
-914
-10% -$96K 0.02% 588
2020
Q2 		$952K Sell
9,616
-681
-7% -$54.3K 0.02% 589
2020
Q1 		$662K Sell
10,297
-33,093
-76% -$2.32M 0.02% 647
2019
Q4 		$2.59M Sell
43,390
-8,883
-17% -$548K 0.06% 340
2019
Q3 		$3.08M Buy
52,273
+36,804
+238% +$2.35M 0.08% 268
2019
Q2 		$998K Sell
15,469
-31,940
-67% -$2.06M 0.03% 602
2019
Q1 		$3.01M Buy
47,409
+33,453
+240% +$1.76M 0.08% 286
2018
Q4 		$530K Buy
13,956
+7,700
+123% +$272K 0.02% 710
2018
Q3 		$268K Buy
+6,256
New +$218K 0.01% 1112
2014
Q4 		– Sell
-1,630
Closed -$219K – 1477
2014
Q3 		$219K Buy
+1,630
New +$228K 0.01% 1209

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
GKIM
GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 1-Year Est. Return
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 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
SIMG
Stephens Investment Management Group Houston, Texas $7.3B AUM 41.96% 1-Year Est. Return
PIM
Paradice Investment Management Denver, Colorado $532M AUM 29.6% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Oppenheimer & Co's TNDM Position: Q1 2025 in Review

Oppenheimer & Co sold out of Tandem Diabetes Care (TNDM) in Q1 2025, closing a stake of 6,922 shares — an estimated $249K sold.

Oppenheimer & Co first reported a position in TNDM in Q3 2014 and held it in 23 quarters. The position peaked at $3.08M in Q3 2019. 275 funds tracked by Wall St. Rank hold TNDM as of Q1 2025.

  • Oppenheimer & Co reported no remaining Tandem Diabetes Care position as of Q1 2025 after selling out during the quarter.
  • Oppenheimer & Co sold 6,922 Tandem Diabetes Care shares in Q1 2025, an estimated $249K.
  • Oppenheimer & Co first reported a position in Tandem Diabetes Care in Q3 2014 and held it in 23 quarters.
  • Oppenheimer & Co's Tandem Diabetes Care position peaked at $3.08M in Q3 2019.
  • 275 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q1 2025.

Based on Oppenheimer & Co's 13F filing for Q1 2025, filed 23 Apr 2025.