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Neuronetics, Inc.

STIM
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0001227636

In the last 90 days, Neuronetics, Inc. insiders filed 2 open-market purchases and 0 sales; 86 institutions reported holding it in 13F filings for Q2 2026, worth $48.4M in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in Neuronetics, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
99
+6 vs. Q4 2025
Shares held
41.6M
+1.98M (+5.0%) vs. Q4 2025
Total value
$60.4M
+$5.62M (+10.3%) vs. Q4 2025
New holders
28
25 more added
Sold out
22
23 more reduced

2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting STIM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 99 institutions
Q1 2021: 83 institutionsQ2 2021: 105 institutionsQ3 2021: 97 institutionsQ4 2021: 80 institutionsQ1 2022: 83 institutionsQ2 2022: 77 institutionsQ3 2022: 76 institutionsQ4 2022: 82 institutionsQ1 2023: 74 institutionsQ2 2023: 69 institutionsQ3 2023: 56 institutionsQ4 2023: 66 institutionsQ1 2024: 66 institutionsQ2 2024: 67 institutionsQ3 2024: 48 institutionsQ4 2024: 45 institutionsQ1 2025: 102 institutionsQ2 2025: 90 institutionsQ3 2025: 99 institutionsQ4 2025: 95 institutionsQ1 2026: 99 institutionsQ2 2026: 86 institutions
Value heldQ1 2026: $60.4M
Q1 2021: $256.4MQ2 2021: $373.7MQ3 2021: $139.9MQ4 2021: $89.0MQ1 2022: $59.9MQ2 2022: $56.4MQ3 2022: $54.4MQ4 2022: $120.4MQ1 2023: $53.6MQ2 2023: $38.6MQ3 2023: $23.4MQ4 2023: $46.2MQ1 2024: $84.2MQ2 2024: $31.5MQ3 2024: $8.05MQ4 2024: $12.2MQ1 2025: $63.2MQ2 2025: $63.1MQ3 2025: $57.8MQ4 2025: $58.3MQ1 2026: $60.4MQ2 2026: $48.4M
Institutions holding STIM and their total value by quarter
QuarterHoldersValue
Q2 202686$48.4M
Q1 202699$60.4M
Q4 202595$58.3M
Q3 202599$57.8M
Q2 202590$63.1M
Q1 2025102$63.2M
Q4 202445$12.2M
Q3 202448$8.05M
Q2 202467$31.5M
Q1 202466$84.2M
Q4 202366$46.2M
Q3 202356$23.4M
Q2 202369$38.6M
Q1 202374$53.6M
Q4 202282$120.4M
Q3 202276$54.4M
Q2 202277$56.4M
Q1 202283$59.9M
Q4 202180$89.0M
Q3 202197$139.9M
Q2 2021105$373.7M
Q1 202183$256.4M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Neuronetics, Inc.; share changes are against Q4 2025.

Institutions holding STIM in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Marshall Wace, LLP0$00.00%−286,045−100.0%Sold out
Two Sigma Investments, LP0$00.00%−198,745−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−169,000−100.0%Sold out
Aristides Capital LLC0$00.00%−136,400−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−108,208−100.0%Sold out
Caption Management, LLC0$00.00%−92,501−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−69,756−100.0%Sold out
BlueCrest Capital Management Ltd0$00.00%−40,000−100.0%Sold out
Tradewinds, LLC.0$00.00%−36,437−100.0%Sold out
National Bank of Canada0$00.00%−32,000−100.0%Sold out
Abel Hall, LLC0$00.00%−28,605−100.0%Sold out
Bluefin Capital Management, LLC0$00.00%−20,937−100.0%Sold out
Verition Fund Management LLC0$00.00%−18,048−100.0%Sold out
Intech Investment Management LLC0$00.00%−17,010−100.0%Sold out
StoneX Group Inc.0$00.00%−16,917−100.0%Sold out
Millennium Management LLC0$00.00%−10,817−100.0%Sold out
Engineers Gate Manager LP0$00.00%−10,661−100.0%Sold out
FreeGulliver LLC0$00.00%−5,000−100.0%Sold out
Woodbridge Co Ltd0$00.00%−1,838−100.0%Sold out
Amalgamated Bank0$00.00%−1,239−100.0%Sold out
United Financial Planning Group LLC0$00.00%−100−100.0%Sold out
Vanguard Group Inc––––Not filed
CIBC Private Wealth Group, LLC––––Not filed