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iRhythm Holdings
IRTC

253 hedge funds and large institutions have $4B invested in iRhythm Holdings in 2024 Q1 according to their latest regulatory filings, with 52 funds opening new positions, 77 increasing their positions, 90 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

148% more first-time investments, than exits

New positions opened: 52 | Existing positions closed: 21

14% more funds holding

Funds holding: 222 → 253 (+31)

12% more capital invested

Capital invested by funds: $3.56B → $4B (+$443M)

2.94% more ownership

Funds ownership: 108.43% → 111.37% (+2.9%)

0% less call options, than puts

Call options by funds: $27.7M | Put options by funds: $27.7M

14% less repeat investments, than reductions

Existing positions increased: 77 | Existing positions reduced: 90

50% less funds holding in top 10

Funds holding in top 10: 2 → 1 (-1)

Holders
253
Holders Change
+31
Holders Change %
+13.96%
% of All Funds
3.64%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.01%
New
52
Increased
77
Reduced
90
Closed
21
Calls
$27.7M
Puts
$27.7M
Net Calls
-$47K
Net Calls Change
+$2.43M

Top Buyers

1
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$56.5M
2
Loomis, Sayles & Company
Loomis, Sayles & Company
Massachusetts
+$34.4M
3
Citadel Advisors
Citadel Advisors
Florida
+$33.1M
4
CIP
Champlain Investment Partners
Vermont
+$33M
5
Schroder Investment Management Group
Schroder Investment Management Group
United Kingdom
+$32.4M

Top Sellers

1
SPPAM
Summit Partners Public Asset Management
Massachusetts
-$44.4M
2
Morgan Stanley
Morgan Stanley
New York
-$43.9M
3
SPC
Slate Path Capital
New York
-$37.8M
4
LOM
LTS One Management
New York
-$37.5M
5
Marshall Wace
Marshall Wace
United Kingdom
-$22.4M
Name Holding Trade Value Shares
Change 		Change in
Stake
IFAM
251
Institutional & Family Asset Management
Colorado
$348 – – –
FGAM
252
Financial Gravity Asset Management
Texas
$274 +$225 +2 New
DFA
253
DHJJ Financial Advisors
Illinois
$232 – – –
SPPAM
254
Summit Partners Public Asset Management
Massachusetts
– -$44.4M -415,089 Closed
LOM
255
LTS One Management
New York
– -$37.5M -350,000 Closed
Marshall Wace
256
Marshall Wace
United Kingdom
– -$22.4M -209,537 Closed
TD Asset Management
257
TD Asset Management
Ontario, Canada
– -$2M -18,704 Closed
WG
258
Winton Group
United Kingdom
– -$1.85M -17,297 Closed
Squarepoint
259
Squarepoint
New York
– -$1.23M -10,929 Closed
PMEF
260
Point72 Middle East FZE
United Arab Emirates
– -$938K -8,764 Closed
WSL
261
Western Standard LLC
California
– -$634K -5,924 Closed
BFM
262
Boothbay Fund Management
New York
– -$619K -5,783 Closed
SSA
263
Schonfeld Strategic Advisors
New York
– -$581K -5,430 Closed
AA
264
AlphaCentric Advisors
Puerto Rico
– -$535K -5,000 Closed
YIH
265
Y-Intercept (HK)
Hong Kong
– -$437K -4,083 Closed
ACM
266
Aquatic Capital Management
Illinois
– -$353K -3,300 Closed
DC
267
Diametric Capital
Massachusetts
– -$313K -2,920 Closed
WMSA
268
Weiss Multi-Strategy Advisers
New York
– -$286K -2,670 Closed
CAPTRUST Financial Advisors
269
CAPTRUST Financial Advisors
North Carolina
– -$250K -2,331 Closed
AG
270
AlTi Global
New York
– -$247K -2,311 Closed
BHCM
271
Brevan Howard Capital Management
Jersey
– -$227K -2,120 Closed
Northwestern Mutual Wealth Management
272
Northwestern Mutual Wealth Management
Wisconsin
– -$76K -710 Closed
FWM
273
Focused Wealth Management
New York
– -$42.8K -400 Closed
BTI
274
Blue Trust Inc
Georgia
– -$4K -41 Closed
7 8 9 10
11

IRTC Hedge Fund Activity: Q1 2024 in Review

253 of the 6,942 institutional investors tracked by Wall St. Rank reported a position in iRhythm Holdings (IRTC) for Q1 2024, worth a combined $4B — up 12% from $3.56B a quarter earlier.

Buyers outnumbered sellers: 52 funds opened new IRTC positions and 21 closed out — a net gain of 31 holders — while 77 added to existing stakes and 90 trimmed.

The largest buyer was Westfield Capital Management, opening a new position worth an estimated $56.5M. The largest seller was Summit Partners Public Asset Management, exiting entirely with an estimated $44.4M sold.

  • 253 institutional investors held iRhythm Holdings (IRTC) as of Q1 2024, up from 222 in Q4 2023.
  • Funds reported $4B of iRhythm Holdings stock for Q1 2024, up 12% quarter-over-quarter.
  • 52 funds opened new iRhythm Holdings positions in Q1 2024 and 21 closed out, a net change of +31 holders.
  • The largest iRhythm Holdings buyer in Q1 2024 was Westfield Capital Management, an estimated $56.5M added.
  • The largest iRhythm Holdings seller in Q1 2024 was Summit Partners Public Asset Management, an estimated $44.4M sold.

Based on aggregated 13F filings for Q1 2024.