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Tandem Diabetes Care
TNDM

290 hedge funds and large institutions have $5.08B invested in Tandem Diabetes Care in 2021 Q1 according to their latest regulatory filings, with 44 funds opening new positions, 105 increasing their positions, 102 reducing their positions, and 59 closing their positions.

New
Increased
Maintained
Reduced
Closed

53% more call options, than puts

Call options by funds: $68M | Put options by funds: $44.5M

3% more repeat investments, than reductions

Existing positions increased: 105 | Existing positions reduced: 102

1.94% less ownership

Funds ownership: 94.01% → 92.07% (-1.9%)

6% less funds holding

Funds holding: 309 → 290 (-19)

9% less capital invested

Capital invested by funds: $5.59B → $5.08B (-$515M)

25% less first-time investments, than exits

New positions opened: 44 | Existing positions closed: 59

67% less funds holding in top 10

Funds holding in top 10: 6 → 2 (-4)

Holders
290
Holders Change
-19
Holders Change %
-6.15%
% of All Funds
5.09%
Holding in Top 10
2
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-66.67%
% of All Funds
0.04%
New
44
Increased
105
Reduced
102
Closed
59
Calls
$68M
Puts
$44.5M
Net Calls
+$23.5M
Net Calls Change
-$35.3M

Top Buyers

1
CIP
Champlain Investment Partners
Vermont
+$125M
2
CS
Credit Suisse
Switzerland
+$57.8M
3
JSP
Jackson Square Partners
California
+$48.2M
4
RI
RTW Investments
New York
+$44.4M
5
Citadel Advisors
Citadel Advisors
Florida
+$41.5M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$160M
2
FAM
Fred Alger Management
New York
-$107M
3
GGHC
Gilder Gagnon Howe & Co
New York
-$56.6M
4
FA
Friess Associates
Delaware
-$44.8M
5
SAM
Sectoral Asset Management
Quebec, Canada
-$40.6M
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$540M -$11.1M -119,710 -2%
Vanguard Group
2
Vanguard Group
Pennsylvania
$482M +$17.9M +192,974 +4%
JSP
3
Jackson Square Partners
California
$327M +$48.2M +518,825 +16%
BlackRock
4
BlackRock
New York
$308M +$904K +9,731 +0.3%
Capital World Investors
5
Capital World Investors
California
$273M +$1.42M +15,315 +0.5%
CS
6
Credit Suisse
Switzerland
$179M +$57.8M +621,872 +44%
Invesco
7
Invesco
Georgia
$156M +$1.69M +18,172 +1%
CIP
8
Champlain Investment Partners
Vermont
$118M +$125M +1,342,160 New
Federated Hermes
9
Federated Hermes
Pennsylvania
$112M -$11.6K -125 -0%
BCM
10
Brown Capital Management
Maryland
$108M +$566K +6,093 +0.5%
VOYA Investment Management
11
VOYA Investment Management
Georgia
$105M -$15.5M -167,300 -12%
RI
12
RTW Investments
New York
$101M +$44.4M +478,248 +72%
T. Rowe Price Associates
13
T. Rowe Price Associates
Maryland
$96.6M -$25.7M -277,065 -20%
DMPV
14
Delphi Management Partners VIII
California
$88.3M – – –
WRF
15
Waddell & Reed Financial
Kansas
$82.9M +$5.9M +63,531 +7%
State Street
16
State Street
Massachusetts
$74.5M +$744K +8,009 +1%
GGHC
17
Gilder Gagnon Howe & Co
New York
$69M -$56.6M -609,058 -44%
Geode Capital Management
18
Geode Capital Management
Massachusetts
$68.6M +$2.9M +31,160 +4%
SEI Investments
19
SEI Investments
Pennsylvania
$60.5M +$12.4M +133,289 +24%
SIMG
20
Stephens Investment Management Group
Texas
$59.2M +$7.88M +84,816 +14%
Citadel Advisors
21
Citadel Advisors
Florida
$57.4M +$41.5M +446,808 +219%
AAM
22
Ardevora Asset Management
United Kingdom
$54.3M +$6.01M +64,701 +12%
TCM
23
TimesSquare Capital Management
New York
$53.5M -$3.39M -36,500 -6%
Norges Bank
24
Norges Bank
Norway
$49.2M -$5.53M -59,522 -10%
Wellington Management Group
25
Wellington Management Group
Massachusetts
$48.4M -$160M -1,716,495 -76%
1
2 3 4 5

TNDM Hedge Fund Activity: Q1 2021 in Review

290 of the 5,695 institutional investors tracked by Wall St. Rank reported a position in Tandem Diabetes Care (TNDM) for Q1 2021, worth a combined $5.08B — down 9.2% from $5.59B a quarter earlier.

Sellers outnumbered buyers: 59 funds closed out of TNDM and 44 opened new positions — a net loss of 15 holders — while 102 trimmed existing stakes and 105 added.

The largest buyer was Champlain Investment Partners, opening a new position worth an estimated $125M. The largest seller was Wellington Management Group, cutting an estimated $160M.

  • 290 institutional investors held Tandem Diabetes Care (TNDM) as of Q1 2021, down from 309 in Q4 2020.
  • Funds reported $5.08B of Tandem Diabetes Care stock for Q1 2021, down 9.2% quarter-over-quarter.
  • 44 funds opened new Tandem Diabetes Care positions in Q1 2021 and 59 closed out, a net change of -15 holders.
  • The largest Tandem Diabetes Care buyer in Q1 2021 was Champlain Investment Partners, an estimated $125M added.
  • The largest Tandem Diabetes Care seller in Q1 2021 was Wellington Management Group, an estimated $160M sold.

Based on aggregated 13F filings for Q1 2021.