How many institutions held IRTC - iRhythm Holdings, Inc. - Common Stock, par value $0.001 per share in Q2 2021?

174 institutional investors reported IRTC - iRhythm Holdings, Inc. - Common Stock, par value $0.001 per share for Q2 2021. Use the holders table for investor-level position and value details.

iRhythm Holdings, Inc. - Common Stock, par value $0.001 per share (IRTC)

Q: What does CUSIP 450056106 represent in this 13F holders report?

CUSIP 450056106 is the security identifier for IRTC - iRhythm Holdings, Inc. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

CUSIP: 450056106

Q2 2021 13F Holders as of 30 Jun 2021

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 29,024,558
Total 13F value: $1,925,764,915
Share change: -2,105,440
Put/Call ratio: 92%
SEC-reported price per share: $66.35
Number of holders: 174
Value change: -$499,916,095
Number of buys: 94
Number of sells: 107
Shares outstanding: 31,735,182

Security key

450056106

Report period

Q2 2021

Institutions

174

Top holders

IRTC full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 iRhythm Holdings, Inc. SEC filings iRhythm Holdings, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 450056106

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of IRTC - iRhythm Holdings, Inc. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

SANDS CAPITAL MANAGEMENT,...

Disclosed value leader

SANDS CAPITAL MANAGEMENT,...

Comparable rows

0/15

Latest evidence

31 Mar 2021

13F Highest disclosed value: $423,185,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

SANDS CAPITAL MANAGEMENT, LLC has the largest disclosed position value at $423.18M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens SANDS CAPITAL MANAGEMENT, LLC's linked filing trail.

Disclosed position value Top 5

SANDS CAPITAL MANAGEMENT, LLC $423.18M

VANGUARD GROUP INC $379.66M

BROWN CAPITAL MANAGEMENT LLC $375.85M

BlackRock Finance, Inc. $316.5M

PRICE T ROWE ASSOCIATES INC /MD/ $274.14M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
SANDS CAPITAL MANAGEMENT, LLC	13F Company 13F	— denominator unverified	$423,185,000 3,047,564 shares	—	31 Mar 2021
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$379,658,000 2,734,107 shares	—	31 Mar 2021
BROWN CAPITAL MANAGEMENT LLC	13F Company 13F	— denominator unverified	$375,847,000 2,706,663 shares	—	31 Mar 2021
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$316,499,000 2,279,248 shares	—	31 Mar 2021
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	— denominator unverified	$274,139,000 1,974,213 shares	—	31 Mar 2021
JPMORGAN CHASE & CO	13F Company 13F	— denominator unverified	$158,283,000 1,139,874 shares	—	31 Mar 2021

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

174

29,024,558

Rows available

174

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2021 vs Q1 2021 Across Filers

Q1 2021 holders

207

Q2 2021 holders

174

Holder diff

-33

Investor	Q1 2021 Shares	Q2 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q2 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend