TNDM icon

Tandem Diabetes Care

270 hedge funds and large institutions have $1.51B invested in Tandem Diabetes Care in 2025 Q2 according to their latest regulatory filings, with 40 funds opening new positions, 117 increasing their positions, 70 reducing their positions, and 43 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

more capital invested

Capital invested by funds: $ → $

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

7% less first-time investments, than exits

New positions opened: 40 | Existing positions closed: 43

2% less funds holding

Funds holding: 275270 (-5)

Holders
270
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$54.4M
Puts
$4.81M
Net Calls
Net Calls Change

Top Buyers

1 +$29M
2 +$23.3M
3 +$14.7M
4
Two Sigma Investments
Two Sigma Investments
New York
+$11.7M
5
Walleye Capital
Walleye Capital
New York
+$11.2M
Name Holding Trade Value Shares
Change
Change in
Stake
226
$7.51K
227
$6.13K
228
$5.96K
229
$5K
230
$4.73K
231
$4K
232
$3.8K
233
$3.15K
234
$3K
235
$2.55K
236
$2.42K
237
$2.33K
238
$2.11K
239
$1.86K
240
$1.86K
241
$1.72K
242
$1.53K
243
$1.4K
244
$1.3K
245
$1.25K
246
$1.21K
247
$1.01K
248
$1K
249
$932
250
$932