Neuronetics, Inc. (STIM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

67,309,000Shares Outstanding

42,780,192Shares held by institutions

$64,170,288Value of institutional holdings

63.56%Institutional ownership %

108.05%Shares Changed QoQ

93No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Neuronetics, Inc. (NASDAQ:STIM) is held by 93 institutional investors per 13F filings through December 2025.

Collectively, these holders controlled 63.1% of Neuronetics's outstanding shares in December 2025, up from 31.7% in September 2025.
They increased total shares held in STIM by 106.95% quarter over quarter, and investors in Neuronetics increased 102.17% from a year ago.
Of these 93 funds, 47 grew their exposure to Neuronetics, 26 cut back, and 20 maintained positions.
The aggregate institutional position in Neuronetics amounted to 42.45Mn shares as of December 2025, up by 21.94Mn shares quarter on quarter, and up 34.89Mn shares year over year.
As of December 31, 2025, Madryn Asset Management, LP held the largest stake in Neuronetics with 18.48Mn shares, accounting for 27.45% of total shares outstanding.
Leading buyers of Neuronetics shares for the quarter ending December 2025 were Madryn Asset Management, LP (18.48Mn), Lane Generational LLC (1.71Mn), JANE STREET GROUP, LLC (783.22K), BALYASNY ASSET MANAGEMENT L.P. (730.76K), RENAISSANCE TECHNOLOGIES LLC (474.9K).
The biggest sellers of Neuronetics for the quarter ending December 2025 included MARSHALL WACE, LLP (639.07K), WEXFORD CAPITAL LP (532.27K), MILLENNIUM MANAGEMENT LLC (372.9K), Morgan Stanley (359.28K), VANGUARD GROUP INC (249.74K).
Neuronetics's 10 largest shareholders as of December 2025 include Madryn Asset Management, LP (18.48Mn), UBS Group AG (2.61Mn), VANGUARD GROUP INC (2.58Mn), BALYASNY ASSET MANAGEMENT L.P. (2.55Mn), BlackRock, Inc. (2.35Mn), Lane Generational LLC (1.71Mn), JANE STREET GROUP, LLC (1.02Mn), MASTERS CAPITAL MANAGEMENT LLC (1.0Mn), FourWorld Capital Management LLC (931.25K), GEODE CAPITAL MANAGEMENT, LLC (891.73K) per Business Quant data.

93 Institutional Holders

42,780,192 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Madryn Asset Management, LP	31 Dec, 2025	18,475,893	18,475,893	0.00%	$25,496,732.00
UBS Group AG	31 Dec, 2025	2,607,047	442,216	20.43%	$3,597,725.00
VANGUARD GROUP INC	31 Dec, 2025	2,582,382	-249,736	-8.82%	$3,563,687.00
BALYASNY ASSET MANAGEMENT L.P.	31 Dec, 2025	2,552,404	730,755	40.12%	$3,522,318.00
BlackRock, Inc.	31 Dec, 2025	2,353,751	50,250	2.18%	$3,248,177.00
Lane Generational LLC	31 Dec, 2025	1,705,197	1,705,197	0.00%	$2,353,172.00
JANE STREET GROUP, LLC	31 Dec, 2025	1,017,862	783,223	333.80%	$1,404,650.00
MASTERS CAPITAL MANAGEMENT LLC	31 Dec, 2025	1,000,000	0	0.00%	$1,380,000.00
FourWorld Capital Management LLC	31 Dec, 2025	931,250	363,250	63.95%	$1,285,125.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	891,733	14,799	1.69%	$1,230,805.00
Ikarian Capital, LLC	31 Dec, 2025	701,182	-204,534	-22.58%	$967,631.00
Goldman Sachs Group Inc	31 Dec, 2025	663,908	442,001	199.18%	$916,192.00
WEXFORD CAPITAL LP	31 Dec, 2025	644,951	-532,274	-45.21%	$890,030.00
State Street Corp	31 Dec, 2025	584,167	-3,466	-0.59%	$806,150.00
HighTower Advisors, LLC	31 Dec, 2025	564,306	-12,763	-2.21%	$778,742.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	474,900	474,900	0.00%	$655,362.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	321,561	100,993	45.79%	$443,754.00
XTX Topco Ltd	31 Dec, 2025	314,194	314,194	0.00%	$433,588.00
MARSHALL WACE, LLP	31 Dec, 2025	286,045	-639,065	-69.08%	$394,743.00
Northern Trust Corp	31 Dec, 2025	278,400	1,790	0.65%	$384,192.00

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