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Tandem Diabetes Care
TNDM

Overview Fund Activity

268 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, 116 increasing their positions, 69 reducing their positions, and 41 closing their positions.

Holders
268
Holders Change
-4
Holders Change %
-1.47%
% of All Funds
3.6%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
40
Increased
116
Reduced
69
Closed
41
Calls
$54.4M
Puts
$4.81M
Net Calls
+$49.6M
Net Calls Change
-$6.58M

Top Buyers

1
OAM
1
Ophir Asset Management
Australia
$24.4M
2
Goldman Sachs
2
Goldman Sachs
New York
$35.2M
3
Millennium Management
3
Millennium Management
New York
$18.1M
4
Two Sigma Investments
4
Two Sigma Investments
New York
$23M
5
Walleye Capital
5
Walleye Capital
New York
$10.6M

Top Sellers

1
PWAM
1
Park West Asset Management
California
$0
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$9.78M
3
FAM
3
Fred Alger Management
New York
$12.4M
4
Balyasny Asset Management
4
Balyasny Asset Management
Illinois
$4.3M
5
KCM
5
Kingdon Capital Management
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
NFSG
226
Newbridge Financial Services Group
Florida
$5.97K – – –
C
227
Covestor
United Kingdom
$5K -$17 -1 -0.3%
IA
228
IFP Advisors
Florida
$4.73K -$1.84K -96 Closed
BCV
229
Banque Cantonale Vaudoise
Switzerland
$4K – – –
HI
230
Harbour Investments
Wisconsin
$3.8K – – –
EWA
231
EverSource Wealth Advisors
Alabama
$3.15K +$2.42K +130 +333%
SCM
232
Sterling Capital Management
North Carolina
$3K +$1.75K +94 +140%
QL
233
Quarry LP
New York
$2.55K +$2.55K +137 New
SPIA
234
Steward Partners Investment Advisory
New York
$2.42K – – –
RIL
235
Rothschild Investment LLC
Illinois
$2.33K +$1.77K +95 +317%
MPWT
236
MassMutual Private Wealth & Trust
Connecticut
$2.11K -$2.95K -158 -58%
TFA
237
Toth Financial Advisory
Virginia
$1.86K – – –
FRA
238
Front Row Advisors
California
$1.86K – – –
PTC
239
Private Trust Company
Ohio
$1.72K -$1.71K -92 -50%
FFO
240
Fortitude Family Office
Arizona
$1.53K +$1.53K +82 New
FDCDDQ
241
Federation des caisses Desjardins du Quebec
Quebec, Canada
$1.4K – – –
TWD
242
True Wealth Design
Ohio
$1.31K +$1.29K +69 +6,900%
CA
243
Clearstead Advisors
Ohio
$1.25K +$1.25K +67 New
PWMG
244
Prestige Wealth Management Group
New Jersey
$1.21K +$37 +2 +3%
EC
245
Elequin Capital
New York
$1.01K +$1.01K +54 New
HFS
246
Hantz Financial Services
Michigan
$1K +$125 +5 +14%
FMII
247
Farmers & Merchants Investments Inc
Nebraska
$932 – – –
AAS
248
Ameritas Advisory Services
Nebraska
$932 +$932 +50 New
GSWM
249
Golden State Wealth Management
California
$764 – – –
BIA
250
Bell Investment Advisors
California
$672 – – –
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