Headlands Technologies’s iRhythm Holdings IRTC Stock Holding History

Headlands Technologies’s Portfolio IRTC Stock Details IRTC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$581K	Buy	4,886 +305	+7%	+$35.5K	0.06%	377
2026 Q1	$541K	Sell	4,581 -2,104	-31%	-$304K	0.06%	341
2025 Q4	$1.19M	Buy	+6,685	New	+$1.18M	0.1%	235
2024 Q4	–	Sell	-2,991	Closed	-$222K	–	1384
2024 Q3	$222K	Buy	+2,991	New	+$238K	0.03%	502
2024 Q2	–	Sell	-430	Closed	-$49.9K	–	1365
2024 Q1	$49.9K	Buy	430 +426	+10,650%	+$47.9K	0.01%	714
2023 Q4	$428	Sell	4 -760	-99%	-$66.2K	﹤0.01%	910
2023 Q3	$72K	Sell	764 -936	-55%	-$95.2K	0.04%	377
2023 Q2	$177K	Buy	+1,700	New	+$204K	0.06%	303

Other funds holding IRTC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

EAM

Eventide Asset Management Boston, Massachusetts $7.48B AUM 104.76% 1-Year Est. Return

Headlands Technologies's IRTC Position: Q2 2026 in Review

Headlands Technologies increased its iRhythm Holdings (IRTC) stake by 6.7% in Q2 2026, buying an estimated $35.5K and bringing the position to 4,886 shares worth $581K. The position accounts for 0.06% of the portfolio, ranked #377.

Headlands Technologies first reported a position in IRTC in Q2 2023 and has held it in 8 quarters since. The position peaked at $1.19M in Q4 2025. 303 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

Headlands Technologies held 4,886 shares of iRhythm Holdings worth $581K as of Q2 2026.
Headlands Technologies bought 305 iRhythm Holdings shares in Q2 2026, an estimated $35.5K.
iRhythm Holdings made up 0.06% of Headlands Technologies's portfolio in Q2 2026, its #377 holding.
Headlands Technologies first reported a position in iRhythm Holdings in Q2 2023 and has held it in 8 quarters since.
Headlands Technologies's iRhythm Holdings position peaked at $1.19M in Q4 2025.
303 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Headlands Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.