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Tandem Diabetes Care
TNDM

Overview Fund Activity

272 hedge funds and large institutions have $1.4B invested in Tandem Diabetes Care in 2025 Q1 according to their latest regulatory filings, with 39 funds opening new positions, 106 increasing their positions, 85 reducing their positions, and 78 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
272
Holders Change
-42
Holders Change %
-13.38%
% of All Funds
3.69%
Holding in Top 10
2
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-60%
% of All Funds
0.03%
New
39
Increased
106
Reduced
85
Closed
78
Calls
$61.6M
Puts
$5.47M
Net Calls
+$56.1M
Net Calls Change
-$50.2M

Top Buyers

1
SC
Sessa Capital
New York
+$85.6M
2
HRCM
Hood River Capital Management
Florida
+$19.8M
3
Balyasny Asset Management
Balyasny Asset Management
Illinois
+$14.7M
4
GKIM
GW&K Investment Management
Massachusetts
+$14.2M
5
PIM
Paradice Investment Management
Colorado
+$13.3M

Top Sellers

1
GGHC
Gilder Gagnon Howe & Co
New York
-$33.6M
2
BG
Bellevue Group
Switzerland
-$28.2M
3
Capital International Investors
Capital International Investors
California
-$25.9M
4
OAM
Oberweis Asset Management
Illinois
-$18.2M
5
CC
Chicago Capital
Illinois
-$18.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
LKIM
301
Lawson Kroeker Investment Management
Nebraska
– -$306K -8,500 Closed
Aviva
302
Aviva
United Kingdom
– -$301K -8,361 Closed
I
303
InceptionR
California
– -$298K -8,273 Closed
EC
304
EntryPoint Capital
New York
– -$294K -8,167 Closed
SI
305
Stephens Inc
Arkansas
– -$284K -7,890 Closed
LA
306
LVW Advisors
New York
– -$281K -7,798 Closed
CAM
307
Cresset Asset Management
Illinois
– -$275K -7,644 Closed
Creative Planning
308
Creative Planning
Kansas
– -$273K -7,582 Closed
XT
309
XTX Topco
Cayman Islands
– -$270K -7,490 Closed
Pictet Asset Management
310
Pictet Asset Management
Switzerland
– -$269K -7,465 Closed
BA
311
Bridgewater Associates
Connecticut
– -$266K -7,378 Closed
OC
312
Oppenheimer & Co
New York
– -$249K -6,922 Closed
RFC
313
Regions Financial Corp
Alabama
– -$248K -6,879 Closed
KeyBank National Association
314
KeyBank National Association
Ohio
– -$245K -6,793 Closed
1WA
315
180 Wealth Advisors
Washington
– -$244K -6,776 Closed
Commonwealth Equity Services
316
Commonwealth Equity Services
Massachusetts
– -$243K -6,740 Closed
QIM
317
Quantitative Investment Management
Virginia
– -$241K -6,706 Closed
Envestnet Portfolio Solutions
318
Envestnet Portfolio Solutions
Illinois
– -$236K -6,560 Closed
Los Angeles Capital Management
319
Los Angeles Capital Management
California
– -$224K -6,205 Closed
RAM
320
RWC Asset Management
United Kingdom
– -$221K -6,147 Closed
PAG
321
Private Advisor Group
New Jersey
– -$221K -6,135 Closed
Pathstone Holdings
322
Pathstone Holdings
New Jersey
– -$221K -6,124 Closed
ASN
323
Advisory Services Network
Georgia
– -$218K -6,054 Closed
AIM
324
Aigen Investment Management
New York
– -$216K -5,992 Closed
ECM
325
Evergreen Capital Management
Washington
– -$214K -5,945 Closed
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