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Disclosery

BLDR BUILDERS FIRSTSOURCE INC

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Stock (common), issuer CIK 1316835

710 managers (727 13F filers) reported a position in BLDR shares at 2026-03-31, 106,130,935 shares in all. 93 filers opened a position and 135 filers sold out during the quarter.

Managers
710
13F filers
727
New
93
Added
278
Reduced
241
Sold out
135
Shares held by filers
106,130,935

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

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

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
Asio Capital, LLC34,281$2.82M0.4%new13F-HRTimeline
Handelsbanken Fonder AB34,219$2.82M0.01%+3,70013F-HRTimeline
Regal Investment Advisors LLC34,138$2.81M0.16%+42013F-HRTimeline
Natixis Investment Managersgroup of 2 filers holding34,110$2.81M+4,762Timeline
Tredje AP-fonden33,893$2.79M0.02%+18,98713F-HRTimeline
Ascent Group, LLCin group Ascent Group, LLC33,830$2.79M0.1%-3813F-HRTimelineGroup
Federation des caisses Desjardins du Qu…33,617$2.77M0.01%+4,66213F-HRTimeline
South Dakota Investment Council33,501$2.76M0.05%+10,72513F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…33,524$2.74M0.01%-7313F-HRTimelineGroup
Qube Research & Technologies Ltd32,935$2.71M<0.01%-233,26213F-HRTimeline
Rockbridge Asset Management LLC32,909$2.71M1.83%-2,82913F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV32,637$2.69M<0.01%-10,08313F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK32,436$2.67M0.01%-4,50413F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…31,579$2.6M0.01%-1,07613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.31,126$2.56M<0.01%+10,58413F-HRTimelineGroup
Alberta Investment Management Corp30,600$2.52M0.02%+18,50013F-HRTimeline
DAVENPORT & Co LLC30,387$2.5M0.01%+3,07413F-HRTimeline
Creative Planningin group Creative Planning30,334$2.5M<0.01%+4,42913F-HRTimelineGroup
Czech National Bank30,116$2.48M0.02%+96613F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM30,042$2.47M0.01%-32913F-HRTimeline
Covea Finance29,956$2.47M0.09%new13F-HRTimeline
KBC Group NVin group KBC Group NV29,921$2.46M0.01%+10,08313F-HRTimelineGroup
DNB Asset Management ASin group DNB Asset Management AS29,328$2.41M0.01%-77,38713F-HRTimelineGroup
TD Asset Management Inc29,192$2.4M<0.01%+16713F-HRTimeline
Vise Technologies, Inc.23,107$2.38M0.05%013F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…28,711$2.36M0.02%+13,75313F-HRTimelineGroup
HighTower Advisors, LLC27,614$2.27M<0.01%-2,24013F-HRTimeline
PECAUT & CO.26,865$2.21M0.72%+7,33013F-HRTimeline
CIBC Asset Management Inc26,689$2.2M0.01%+37113F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.26,086$2.15M0.03%-1,67813F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/26,045$2.14M<0.01%-55,41613F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…25,759$2.12M0.01%+3713F-HRTimeline
DANSKE BANK A/S25,303$2.08M0.01%-20013F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.25,349$2.08M0.01%-1,27513F-HRTimeline
BRIDGES INVESTMENT MANAGEMENT INC24,848$2.05M0.03%+10,94613F-HRTimeline
Intrinsic Value Partners, LLC24,745$2.04M1.57%+9,98013F-HRTimeline
GROUP ONE TRADING LLC24,561$2.02M0.07%+8,92213F-HRTimeline
APG Asset Management N.V.in group APG Asset Management N.V.28,203$2.02M0.01%-1,98013F-HRTimelineGroup
Campbell & CO Investment Adviser LLC23,919$1.97M0.11%-51,08413F-HRTimeline
Retirement Systems of Alabama23,483$1.93M0.01%-4313F-HRTimeline
KELLEHER FINANCIAL ADVISORS23,093$1.9M0.48%013F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC24,019$1.89M0.02%+12,36713F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP23,430$1.88M<0.01%+18,04013F-HRTimelineGroup
INKWELL CAPITAL LLC22,620$1.86M1.9%-12013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT22,574$1.86M0.03%-1,45513F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.22,357$1.84M0.02%-9113F-HRTimelineGroup
LECAP ASSET MANAGEMENT LTD22,293$1.84M0.69%new13F-HRTimeline
Lombard Odier Asset Management (Switzer…22,278$1.83M0.07%-7,70013F-HRTimeline
KCM INVESTMENT ADVISORS LLC22,140$1.82M0.06%-35013F-HRTimeline
SEB Asset Management AB21,832$1.8M0.01%13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC21,690$1.79M<0.01%-3613F-HRTimelineGroup
Swedbank ABin group Swedbank AB21,681$1.78M<0.01%-37,56113F-HRTimelineGroup
Janney Montgomery Scott LLC21,593$1.78M<0.01%+15,09213F-HRTimeline
Edgestream Partners, L.P.21,277$1.75M0.06%+17,63913F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC21,222$1.75M0.1%+7,39713F-HRTimelineGroup
OP Asset Management Ltd20,830$1.71M0.02%+8,62913F-HR/ATimeline
Main Street Financial Solutions, LLC20,708$1.7M0.12%+7,34513F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.20,488$1.69M<0.01%-2,62913F-HRTimelineGroup
ASSETMARK, INCin group ASSETMARK, INC20,319$1.67M<0.01%-572,88513F-HRTimelineGroup
Capital Investment Advisors, LLC20,229$1.67M0.02%+10,92513F-HR/ATimeline
ProShare Advisors LLC20,167$1.66M<0.01%-4,23413F-HRTimeline
AMALGAMATED BANK20,047$1.65M0.01%-2,79713F-HRTimeline
Impala Asset Management LLC20,000$1.65M0.77%new13F-HRTimeline
IFM Investors Pty Ltd19,966$1.64M0.01%-2,11313F-HRTimeline
SIMPLEX TRADING, LLC19,773$1.63M0.05%+3,91313F-HRTimeline
Marnell Management LLC19,772$1.63M1.08%new13F-HRTimeline
MONIMUS CAPITAL MANAGEMENT, LP19,672$1.62M0.45%new13F-HRTimeline
UniSuper Management Pty Ltd19,497$1.61M0.01%+1,01613F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…19,491$1.6M<0.01%+9,75613F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC19,360$1.59M<0.01%-5,43613F-HRTimelineGroup
SCOTIA CAPITAL INC.19,350$1.59M0.01%+69913F-HRTimeline
Tabor Asset Management, LP19,348$1.59M0.64%new13F-HRTimeline
Miller Value Partners, LLC18,893$1.56M0.41%new13F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.18,713$1.54M<0.01%+81513F-HRTimelineGroup
Pekin Hardy Strauss, Inc.18,530$1.53M0.16%+5,82413F-HRTimeline
Cambridge Investment Research Advisors,…18,239$1.5M<0.01%-5,15913F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…18,150$1.49M0.01%+2,25013F-HRTimeline
XPONANCE LLC18,045$1.49M0.01%+2,46713F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP17,970$1.48M0.13%new13F-HRTimeline
WASATCH ADVISORS LP17,905$1.47M0.01%+8,08713F-HRTimeline
Utah Retirement Systems17,678$1.46M0.01%-29313F-HRTimeline
Buckland Partners Management Co LLC17,100$1.41M0.85%013F-HRTimeline
Prescott Group Capital Management, L.L.…17,041$1.4M0.14%-30,00013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC16,891$1.39M<0.01%-409,84713F-HRTimelineGroup
THOROUGHBRED FINANCIAL SERVICES, LLC16,879$1.39M0.08%013F-HRTimeline
Polianta Ltd16,700$1.37M0.18%+3,00013F-HRTimeline
Police & Firemen's Retirement System of…16,636$1.37M0.01%013F-HRTimeline
M&T Bank Corpin group M&T Bank Corp16,464$1.36M<0.01%+35113F-HR/ATimelineGroup
Fort Point Capital Partners LLC16,371$1.35M0.18%+13,27413F-HRTimeline
WELCH CAPITAL PARTNERS LLC/NY16,301$1.34M0.3%+10,17613F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA16,204$1.33M<0.01%-1,27013F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP16,121$1.33M<0.01%-1,47413F-HRTimelineGroup
Grange Capital, LLC16,064$1.32M1.32%-3,16113F-HRTimeline
Rakuten Group, Inc.group of 2 filers holding16,554$1.31M+1,876Timeline
KING LUTHER CAPITAL MANAGEMENT CORP15,774$1.3M0.01%+2,35913F-HRTimeline
Ensign Peak Advisors, Inc15,762$1.3M<0.01%-30,54313F-HR/ATimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC15,554$1.28M0.01%+1,31913F-HRTimelineGroup
NEOS Investment Management LLC15,278$1.26M0.01%+44313F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …15,243$1.25M0.01%-4,34113F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC15,048$1.24M0.01%+20313F-HRTimeline
Numerai GP LLC15,015$1.24M0.12%new13F-HRTimeline
Soapstone Management L.P.15,000$1.23M0.88%013F-HRTimeline
&PARTNERS18,500$1.23M0.01%+47813F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…14,680$1.21M0.01%+4,16013F-HRTimelineGroup
National Pension Service14,466$1.19M<0.01%-6,29413F-HRTimeline
Shay Capital LLC14,400$1.19M0.17%new13F-HRTimeline
NISSAY ASSET MANAGEMENT CORP /JAPAN14,265$1.17M0.01%-22613F-HRTimeline
HANCOCK WHITNEY CORP14,799$1.17M0.02%-21413F-HRTimeline
Cunning Capital Partners, LP13,970$1.15M0.59%013F-HRTimeline
GSA CAPITAL PARTNERS LLP13,928$1.15M0.07%+1,80813F-HRTimeline
State of Tennessee, Department of Treas…13,804$1.14M<0.01%013F-HRTimeline
Summit Trail Advisors, LLC13,646$1.12M0.02%+3,97513F-HRTimeline
Carnegie Lake Advisors LLC13,544$1.12M0.44%013F-HRTimeline
BLAIR WILLIAM & CO/IL13,450$1.11M<0.01%new13F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…13,401$1.1M0.01%013F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …13,592$1.09M<0.01%+1,15513F-HRTimelineGroup
PensionDanmark Pensionsforsikringsaktie…13,016$1.07M0.01%+3,21613F-HRTimeline
WINCAP FINANCIAL LLC12,758$1.05M0.7%+1,34513F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND12,672$1.04M0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding12,463$1.03M-5,610Timeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …12,341$1.02M<0.01%-86,39313F-HRTimelineGroup
Woodline Partners LP12,116$998K<0.01%new13F-HR/ATimeline
US BANCORP \DE\in group US BANCORP \DE\11,984$987K<0.01%-43813F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP11,949$984K0.01%+4,64013F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.12,092$953K0.17%+7,74613F-HRTimeline
Rehmann Capital Advisory Group11,576$953K0.05%+1,22613F-HRTimeline
State of Alaska, Department of Revenue11,059$910K0.01%+10013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC10,996$905K0.01%new13F-HRTimeline
Oak Thistle LLC10,978$904K0.09%new13F-HRTimeline
Concentric Capital Strategies, LP10,969$903K0.08%+99413F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP11,419$900K<0.01%+1,99513F-HRTimeline
Union Square Park Capital Management, L…10,000$823K0.72%new13F-HR/ATimeline
Crossingbridge Advisors, LLC10,000$823K0.15%new13F-HRTimeline
AlphaCentric Advisors LLC10,000$823K0.82%new13F-HRTimeline
CROWN ADVISORS MANAGEMENT, INC.10,000$823K0.55%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
ABN AMRO INVESTMENT SOLUTIONSin group ABN AMRO INVESTMENT SOLUTIONS9,961$820K0.01%+2,91613F-HRTimelineGroup
Truvestments Capital LLC9,870$813K0.15%+42313F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…9,828$809K<0.01%-2,41813F-HRTimelineGroup
BROWN ADVISORY INCin group BROWN ADVISORY INC9,749$803K<0.01%+513F-HRTimelineGroup
Eschler Asset Management LLPin group Eschler Asset Management LLP9,660$795K0.79%013F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…9,659$795K<0.01%013F-HRTimeline
TT International Asset Management LTD9,601$790K0.09%new13F-HRTimeline
Harber Asset Management LLC9,600$790K0.51%new13F-HRTimeline
INCEPTIONR LLC9,576$788K0.19%+61313F-HRTimeline
Orion Porfolio Solutions, LLC9,278$764K0.01%-73813F-HRTimeline
Dynamic Technology Lab Private Ltd9,183$756K0.12%new13F-HRTimeline
Pacer Advisors, Inc.9,163$754K<0.01%+9613F-HR/ATimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.9,132$752K0.01%-7,24613F-HRTimelineGroup
SHUFRO ROSE & CO LLC9,100$749K0.05%013F-HRTimeline
Atria Investments, Inc9,093$749K0.01%+4,61313F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…9,070$747K0.01%+5,92213F-HRTimelineGroup
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…9,021$743K0.02%+4,76913F-HRTimelineGroup
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD8,903$733K<0.01%-1,01713F-HRTimelineGroup
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…8,752$721K<0.01%+2,28413F-HRTimelineGroup
Gulf International Bank (UK) Ltd8,678$714K0.02%+2,44513F-HRTimeline
LRT Capital Management, LLC8,540$703K0.66%+93713F-HRTimeline
Sanctuary Advisors, LLC8,478$698K<0.01%+4,08313F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD8,436$695K<0.01%-3,37413F-HRTimeline
OSSIAM8,386$690K0.01%-613F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc8,288$682K<0.01%-60,03813F-HRTimelineGroup
Eurizon Capital SGR S.p.A.8,232$668K<0.01%-4,32713F-HRTimeline
Intellectus Partners, LLC8,025$661K0.13%+2,32513F-HRTimeline
Financial Enhancement Group LLC7,435$658K0.08%+2,00413F-HRTimeline
Mariner, LLCin group Mariner, LLC7,988$658K<0.01%-3,43313F-HRTimelineGroup
Investment Management Corp of Ontario7,875$648K0.01%+40013F-HRTimeline
IMC-Chicago, LLC7,721$636K0.01%-23,96713F-HRTimeline
Candriam S.C.A.7,710$635K<0.01%+1,67013F-HRTimeline
WESTBOURNE INVESTMENTS, INC.7,600$626K0.3%013F-HRTimeline
Altshuler Shaham Ltd7,600$626K0.01%+18013F-HRTimeline
Assenagon Asset Management S.A.7,577$624K<0.01%-2,06913F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding7,537$621K-18,908Timeline
NLB Skladi, upravljanje premozenja, d.o…7,522$619K0.03%-8013F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.7,512$618K<0.01%-2,68813F-HRTimeline
LEVIN CAPITAL STRATEGIES, L.P.7,500$617K0.05%+3,00013F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC7,296$601K<0.01%+23313F-HRTimelineGroup
Norinchukin Bank, Thein group Norinchukin Bank, The7,287$600K0.01%+113F-HRTimelineGroup
Legato Capital Management LLC7,256$597K0.05%-15,82613F-HRTimeline
Interchange Capital Partners, LLC4,713$588K0.19%-41213F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA7,126$587K<0.01%+45013F-HRTimelineGroup
OMERS ADMINISTRATION Corp7,053$581K<0.01%+1,91613F-HRTimeline
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP6,995$576K<0.01%+2,71013F-HRTimelineGroup
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…6,979$575K<0.01%-33513F-HRTimelineGroup
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC6,937$571K<0.01%+4,13613F-HRTimelineGroup
Wellington Shields & Co., LLCin group Wellington Shields Capital Ma…6,828$562K0.14%+3813F-HRTimelineGroup
Gradient Investments LLCin group Gradient Investments LLC6,805$560K0.01%-10613F-HRTimelineGroup
Moors & Cabot, Inc.6,775$558K0.02%-61313F-HRTimeline
DRW Securities, LLC6,689$551K0.03%+4,63113F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC6,685$550K0.01%-1,36713F-HRTimelineGroup
Farther Finance Advisors, LLC6,780$549K0.01%-16913F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP6,577$541K<0.01%-176,09313F-HRTimelineGroup
PRUDENTIAL PLCin group PRUDENTIAL PLC6,569$541K<0.01%013F-HRTimelineGroup
Roundview Capital LLC6,561$540K0.03%new13F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding6,418$528KnewTimeline
HARTFORD INVESTMENT MANAGEMENT CO6,375$525K0.02%013F-HRTimeline
Farringdon Capital, Ltd.6,251$515K0.11%new13F-HRTimeline
Vestcor Inc6,204$511K0.01%013F-HRTimeline
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.6,173$508K0.02%+25613F-HRTimelineGroup
NewEdge Wealth, LLC6,038$497K0.01%+1,21613F-HRTimeline
Hardy Reed LLC6,000$494K0.04%013F-HRTimeline
ClearAlpha Technologies LP5,792$477K0.98%+1,60113F-HRTimeline

Events

  • BlackRock, Inc. reported 12,897,766 BLDR shares, 12% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-05. 0002012383-26-003316

    Accepted , ingested