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Tandem Diabetes Care

269 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.

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)

2% less first-time investments, than exits

New positions opened: 40 | Existing positions closed: 41

1% less funds holding

Funds holding: 272269 (-3)

Holders
269
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 +$24.4M
2 +$21.9M
3 +$13.8M
4
Two Sigma Investments
Two Sigma Investments
New York
+$11M
5
Walleye Capital
Walleye Capital
New York
+$10.6M
Name Holding Trade Value Shares
Change
Change in
Stake
HWM
151
HighMark Wealth Management
Minnesota
$441K
SAM
152
Shell Asset Management
Netherlands
$426K
PTC
153
Petrus Trust Company
Texas
$423K
Handelsbanken Fonder
154
Handelsbanken Fonder
Sweden
$410K
Zurich Cantonal Bank
155
Zurich Cantonal Bank
Switzerland
$400K
SOW
156
State of Wyoming
Wyoming
$400K
TRSOTSOK
157
Teachers Retirement System of the State of Kentucky
Kentucky
$397K
PNC Financial Services Group
158
PNC Financial Services Group
Pennsylvania
$391K
II
159
Inspire Investing
Idaho
$389K
MSRPS
160
Maryland State Retirement & Pension System
Maryland
$365K
ASRS
161
Arizona State Retirement System
Arizona
$362K
AB
162
Amalgamated Bank
New York
$353K
XT
163
XTX Topco
Cayman Islands
$350K
State Board of Administration of Florida Retirement System
164
State Board of Administration of Florida Retirement System
Florida
$346K
BC
165
Bridgefront Capital
Texas
$341K
Mariner
166
Mariner
Kansas
$331K
A
167
AlphaQuest
New York
$324K
Neuberger Berman Group
168
Neuberger Berman Group
New York
$321K
COPPSERS
169
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$319K
JFG
170
Jefferies Financial Group
New York
$307K
DT
171
Diversified Trust
Tennessee
$305K
PFSRSONJ
172
Police & Firemen's Retirement System of New Jersey
New Jersey
$285K
OPERF
173
Oregon Public Employees Retirement Fund
Oregon
$285K
ProShare Advisors
174
ProShare Advisors
Maryland
$278K
Cetera Investment Advisers
175
Cetera Investment Advisers
Illinois
$274K