ALLURION TECHNOLOGIES, INC. - Common Stock, par value $0.0001 per share (ALUR) Institutional Ownership

13F Institutional Holders and Ownership History from Q4 2024 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.0001 per share
Symbol
ALUR on NYSE
Shares outstanding
14,952,868
Price per share
$1.06
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
6,650,537
Total reported value
$8,193,770
% of total 13F portfolios
0%
Share change
+3,724,169
Value change
+$4,593,265
Number of holders
25
Price from insider filings
$1.06
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of ALLURION TECHNOLOGIES, INC. - Common Stock, par value $0.0001 per share (ALUR) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
RTW INVESTMENTS, LP 39% -18% $8,542,574 5,891,430 0% RTW Investments, LP 26 Feb 2026
ARMISTICE CAPITAL, LLC 5% -31% $279,673 -$99,410 136,486 -26% Armistice Capital, LLC 30 Sep 2025

As of 31 Dec 2025, 25 institutional investors reported holding 6,650,537 shares of ALLURION TECHNOLOGIES, INC. - Common Stock, par value $0.0001 per share (ALUR). This represents 44% of the company’s total 14,952,868 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of ALLURION TECHNOLOGIES, INC. - Common Stock, par value $0.0001 per share (ALUR) together control 44% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
RTW INVESTMENTS, LP 39% 5,891,430 +132% 0.07% $7,246,459
Lunt Capital Management, Inc. 1.1% 166,666 0.08% $204,999
VANGUARD GROUP INC 0.59% 88,650 +58% 0% $109,039
Empery Asset Management, LP 0.4% 59,881 0% 0.06% $73,654
L1 Global Manager Pty Ltd 0.4% 59,880 0% 0.05% $73,652
HEIGHTS CAPITAL MANAGEMENT, INC 0.4% 59,880 0.03% $73,652
Hudson Bay Capital Management LP 0.4% 59,880 0% $87,067
ARMISTICE CAPITAL, LLC 0.4% 59,880 0% $73,652
Unisphere Establishment 0.33% 49,695 0% 0% $61,125
GEODE CAPITAL MANAGEMENT, LLC 0.27% 40,311 +1.8% 0% $49,586
UBS Group AG 0.2% 29,865 -49% 0% $36,734
STATE STREET CORP 0.17% 26,135 +76% 0% $32,146
BlackRock, Inc. 0.13% 18,855 0% 0% $23,192
NORTHERN TRUST CORP 0.1% 14,821 0% $18,230
XTX Topco Ltd 0.08% 12,577 +2.9% 0% $15,470
Centerpoint Advisors, LLC 0.04% 6,347 0% 0% $8,000
LRI Investments, LLC 0.03% 5,000 0% 0% $6,150
OSAIC HOLDINGS, INC. 0% 504 -36% 0% $619
GROUP ONE TRADING LLC 0% 199 0% 0% $245
BANK OF AMERICA CORP /DE/ 0% 56 +40% 0% $69
SBI Securities Co., Ltd. 0% 10 -23% 0% $12
DV EQUITIES, LLC 0% 6 0% 0% $7
JPMORGAN CHASE & CO 0% 4 0% 0% $5
SIGNATUREFD, LLC 0% 3 0% 0% $4
HARBOUR INVESTMENTS, INC. 0% 2 0% 0% $2

Institutional Holders of ALLURION TECHNOLOGIES, INC. - Common Stock, par value $0.0001 per share (ALUR) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 6,650,537 $8,193,770 +$4,593,265 $1.23 25
2025 Q3 2,806,601 $5,753,623 -$19,882 $2.05 19
2025 Q2 2,815,977 $6,842,410 +$3,426,019 $2.43 21
2025 Q1 1,394,328 $4,441,171 +$4,441,108 $3.21 23
2024 Q4 21 $9 $0.43 1