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Disclosery

SLDB SOLID BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1707502

137 managers (144 13F filers) reported a position in SLDB shares at 2026-03-31, 99,699,288 shares in all. 28 filers opened a position and 12 filers sold out during the quarter.

Managers
137
13F filers
144
New
28
Added
53
Reduced
39
Sold out
12
Shares held by filers
99,699,288

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
SMITH IAN Fdirector2026-10-02+3,440 MForm 4

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC11,906,646$85.7M1.69%+73,10713F-HR/ATimelineGroup
Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In…9,808,819$70.6M6.37%+1,897,15013F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.9,339,978$67.2M0.71%+3,528,55513F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.7,690,405$55.4M1.53%013F-HRTimelineGroup
Vestal Point Capital, LP5,000,000$36M1.01%-815,00013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.4,958,354$35.7M<0.01%+88,67213F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson4,010,695$28.9M0.01%new13F-HR/ATimelineGroup
FMR LLCin group FMR LLC3,606,404$26M<0.01%+1,576,50613F-HRTimelineGroup
Deep Track Capital, LP3,565,062$25.7M0.53%new13F-HRTimeline
VANGUARD GROUP INCgroup of 5 filers holding3,386,738$24.4MnewTimeline
ARMISTICE CAPITAL, LLC3,200,000$23M0.76%+588,00013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC2,596,800$18.7M0.01%-67,06313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC2,438,849$17.6M<0.01%new13F-HR/ATimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.2,280,125$16.4M0.05%+597,32013F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources2,192,937$15.8M<0.01%+593,70413F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.2,050,843$14.8M0.03%-365,26513F-HRTimelineGroup
Redmile Group, LLCin group Redmile Group, LLC2,011,895$14.5M0.96%+151,35313F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…1,756,506$12.6M0.02%+356,50613F-HRTimelineGroup
Monashee Investment Management LLC1,420,295$10.2M5.56%+70,52413F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,295,984$9.33M<0.01%+28,59213F-HRTimelineGroup
Nantahala Capital Management, LLCin group Nantahala Capital Management,…1,165,078$8.39M0.52%-438,25813F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,125,487$8.1M<0.01%+38,07413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP956,135$6.88M<0.01%+277,05113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC935,535$6.74M<0.01%-70,77113F-HRTimelineGroup
Ally Bridge Group (NY) LLC766,974$5.52M5.49%+353,34913F-HRTimeline
BLAIR WILLIAM & CO/IL651,216$4.69M0.01%new13F-HRTimeline
Birchview Capital, LP625,980$4.51M2.57%-79,97513F-HRTimeline
Woodline Partners LP495,076$3.56M0.01%+178,25313F-HR/ATimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding467,302$3.36M-347,952Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP418,199$3.01M<0.01%+5,42213F-HRTimelineGroup
Nuveen, LLCin group TIAA400,292$2.88M<0.01%+5,31613F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/386,793$2.78M<0.01%+42,49913F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC363,675$2.62M<0.01%+247,04313F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.340,940$2.45M<0.01%+188,81413F-HRTimelineGroup
MOORE CAPITAL MANAGEMENT, LP324,749$2.34M0.09%new13F-HRTimeline
Parkman Healthcare Partners LLC308,844$2.22M0.23%-109,52713F-HRTimeline
Boxer Capital Management, LLCin group Boxer Capital Management, LLC300,000$2.16M0.28%013F-HRTimelineGroup
J. Goldman & Co LP284,467$2.05M0.09%new13F-HRTimeline
Ikarian Capital, LLCin group Ikarian Capital, LLC264,409$1.9M0.27%+104,00013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY261,130$1.88M<0.01%-133,13613F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO276,412$1.79M<0.01%+244,65513F-HR/ATimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS217,196$1.56M<0.01%+142,56613F-HRTimelineGroup
STEMPOINT CAPITAL LP195,403$1.41M0.27%new13F-HR/ATimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management178,253$1.2M<0.01%-182,68413F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…161,278$1.16M<0.01%-24,40413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co160,730$1.16M<0.01%-80713F-HRTimelineGroup
Apis Capital Advisors, LLC160,000$1.15M0.18%-36,00013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC151,541$1.09M<0.01%+19,58413F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp137,944$993K<0.01%-6,75513F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.128,348$924K<0.01%+8813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC124,272$895K<0.01%+71,47213F-HRTimeline
Trexquant Investment LP123,906$892K0.01%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC114,392$824K<0.01%+17,07013F-HRTimelineGroup
Fisher Asset Management, LLC103,481$745K<0.01%013F-HRTimeline
UBS Group AGgroup of 2 filers holding101,111$728K-810,797Timeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC96,993$698K<0.01%-116,41613F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP92,207$664K<0.01%-61,20013F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC91,095$656K<0.01%-135,66013F-HRTimeline
Quantum Private Wealth, LLC90,231$650K0.2%-4,00013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC87,049$627K0.01%+34,25013F-HRTimeline
HRT FINANCIAL LP86,905$625K<0.01%+71,98613F-HRTimeline
RHUMBLINE ADVISERS82,103$591K<0.01%-46913F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd76,485$551K0.01%+40,85213F-HRTimelineGroup
ALGERT GLOBAL LLC72,654$523K0.01%new13F-HR/ATimeline
CITIGROUP INCin group CITIGROUP INC69,376$500K<0.01%+65,86913F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC59,739$430K0.02%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC58,877$424K<0.01%-79,25913F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.69,260$391K<0.01%-12,57013F-HRTimeline
Knott David M Jr47,143$339K0.2%-115,29713F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\46,275$333K<0.01%+6,31313F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD45,607$328K<0.01%+15,60013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC44,769$322K<0.01%-5,28513F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/40,347$291K<0.01%+5,26013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC39,511$284K<0.01%+17,36013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC37,420$269K<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning34,566$249K<0.01%+9,67713F-HRTimelineGroup
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.33,569$242K<0.01%13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN32,281$232K<0.01%-43,82613F-HR/ATimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding32,088$231K+958Timeline
Schonfeld Strategic Advisors LLC30,493$220K<0.01%-152,37613F-HRTimeline
GSA CAPITAL PARTNERS LLP29,569$213K0.01%new13F-HRTimeline
Persistent Asset Partners Ltd27,990$202K0.08%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…26,483$191K<0.01%new13F-HRTimelineGroup
Brooklyn Investment Group25,811$186K0.01%new13F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.27,228$177K0.03%+2,22313F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC23,460$169K<0.01%013F-HRTimeline
SFMG, LLC22,153$160K0.01%new13F-HRTimeline
Engineers Gate Manager LP21,505$155K<0.01%new13F-HRTimeline
Scientech Research LLC20,409$147K0.12%new13F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP19,897$143K0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…17,389$125K<0.01%013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC16,578$119K<0.01%-17,90713F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …16,273$117K<0.01%-1,98013F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC16,000$115K<0.01%-4,17513F-HRTimelineGroup
SIMPLEX TRADING, LLC15,097$109K<0.01%-45,43713F-HRTimeline
Verdad Advisers, LP14,879$107K0.12%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…14,524$105K<0.01%new13F-HRTimelineGroup
China Universal Asset Management Co., L…13,826$99.5K0.01%+1,13113F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\13,218$95.2K<0.01%+12,91813F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO13,078$94.2K<0.01%013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…12,650$91.1K<0.01%new13F-HRTimelineGroup
ProShare Advisors LLC12,033$86.6K<0.01%-2,18513F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC10,684$76.9K<0.01%-47613F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P10,574$76.1K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…8,888$64K<0.01%+1,68413F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND7,100$51.1K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC5,436$39.1K<0.01%+60013F-HRTimeline
CWM, LLCin group CWM, LLC5,295$38.1K<0.01%+80113F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc5,270$37.9K<0.01%013F-HRTimelineGroup
Steward Partners Investment Advisory, L…4,955$35.7K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,926$35.5K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…3,190$23K<0.01%-44113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,776$20K<0.01%-7,89513F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,666$19K<0.01%-1,63013F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,589$18.6K<0.01%+2,24513F-HRTimelineGroup
Sterling Capital Management LLC1,953$14.1K<0.01%-1,44513F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,739$12.5K<0.01%+20913F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,463$10.5K<0.01%-55413F-HRTimelineGroup
GAMMA Investing LLC1,117$8.04K<0.01%+87513F-HRTimeline
Quantbot Technologies LP1,000$7.2K<0.01%new13F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.1,000$7K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
SBI Securities Co., Ltd.877$6.31K<0.01%+12113F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…682$4.91K<0.01%+2613F-HRTimelineGroup
Larson Financial Group LLC630$4.54K<0.01%+40813F-HRTimeline
True Wealth Design, LLC582$4.19K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.560$4.03K<0.01%+25613F-HR/ATimelineGroup
Osbon Capital Management LLC501$3.61K<0.01%013F-HRTimeline
Allworth Financial LP418$3.01K<0.01%new13F-HRTimeline
Physician Wealth Advisors, Inc.312$2.25K<0.01%013F-HRTimeline
IFP Advisors, Inc298$2.15K<0.01%013F-HRTimeline
QUADRANT CAPITAL GROUP LLC278$2K<0.01%-1,32713F-HR/ATimeline
Basecamp Wealth Advisors LLC137$986<0.01%013F-HRTimeline
Parkside Financial Bank & Trust135$971<0.01%013F-HRTimeline
Parallel Advisors, LLC125$900<0.01%new13F-HR/ATimeline
MAI Capital Management123$886<0.01%013F-HRTimeline
Keating Financial Advisory Services, In…33$238<0.01%new13F-HRTimeline
Activest Wealth Management0$00%new13F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • SMITH IAN F acquired 3,440 SLDB shares on 2026-10-02, Form 4 filed 2026-10-06. 0001193125-26-415649

    Accepted , ingested