Who owns TopBuild (BLD)
Which tracked institutional funds hold BLD, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BLD company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
BLD’s largest tracked holder by dollar value, HBK INVESTMENTS L P, sizes it at 12.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 11.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BLD divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their BLD positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| HBK INVESTMENTS L P new | 2,625,000 | $931M | 10.3% | 2026-Q2 |
| Capital World Investors added | 1,584,069 | $562M | 6.2% | 2026-Q2 |
| Capital Research Global Investors trimmed | 1,562,011 | $554M | 6.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,268,749 | $450M | 5.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 1,172,579 | $416M | 4.6% | 2026-Q2 |
| UBS Group AG added | 1,155,049 | $409M | 4.5% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 965,007 | $342M | 3.8% | 2026-Q2 |
| STATE STREET CORP trimmed | 661,941 | $235M | 2.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 606,635 | $215M | 2.4% | 2026-Q2 |
| BlackRock, Inc. trimmed | 566,817 | $201M | 2.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 552,459 | $196M | 2.2% | 2026-Q2 |
| NORGES BANK added | 546,026 | $194M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 539,478 | $229M | 2.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 530,253 | $188M | 2.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 499,242 | $177M | 2.0% | 2026-Q2 |
| O'Connor Alternative Investments LLC new | 480,292 | $170M | 1.9% | 2026-Q2 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main trimmed | 441,717 | $157M | 1.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 419,180 | $149M | 1.6% | 2026-Q2 |
| Capital International Investors trimmed | 405,711 | $144M | 1.6% | 2026-Q2 |
| TIG Advisors, LLC new | 395,094 | $168M | 1.9% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 310,347 | $112M | 1.2% | 2026-Q2 |
| Boston Partners trimmed | 287,347 | $102M | 1.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 273,295 | $116M | 1.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 269,196 | $95M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 269,109 | $95M | 1.1% | 2026-Q2 |
| ROYAL LONDON ASSET MANAGEMENT LTD trimmed | 254,264 | $90M | 1.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 250,058 | $89M | 1.0% | 2026-Q2 |
| Weiss Asset Management LP new | 225,000 | $80M | 0.9% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 224,670 | $80M | 0.9% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 219,179 | $78M | 0.9% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 215,964 | $77M | 0.8% | 2026-Q2 |
| Liontrust Investment Partners LLP trimmed | 205,906 | $73M | 0.8% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 198,979 | $71M | 0.8% | 2026-Q2 |
| BARCLAYS PLC added | 190,043 | $67M | 0.7% | 2026-Q2 |
| NEXPOINT ASSET MANAGEMENT, L.P. new | 185,680 | $66M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 178,072 | $63M | 0.7% | 2026-Q2 |
| FMR LLC trimmed | 170,568 | $60M | 0.7% | 2026-Q2 |
| Polar Asset Management Partners Inc. new | 167,585 | $71M | 0.8% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 155,764 | $55M | 0.6% | 2026-Q2 |
| CITIGROUP INC added | 138,243 | $49M | 0.5% | 2026-Q2 |
| CAXTON ASSOCIATES LLP added | 137,737 | $49M | 0.5% | 2026-Q2 |
| Life Cycle Investment Partners Ltd trimmed | 126,758 | $45M | 0.5% | 2026-Q2 |
| Squarepoint Ops LLC added | 117,979 | $42M | 0.5% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 117,269 | $42M | 0.5% | 2026-Q2 |
| Boston Trust Walden Corp trimmed | 114,907 | $41M | 0.5% | 2026-Q2 |
| First Trust Capital Management L.P. new | 110,000 | $47M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 108,231 | $38M | 0.4% | 2026-Q2 |
| Vontobel Holding Ltd. added | 104,902 | $37M | 0.4% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 91,522 | $32M | 0.4% | 2026-Q2 |
| ALPINE ASSOCIATES MANAGEMENT INC. new | 91,308 | $39M | 0.4% | 2026-Q2 |
| Quantinno Capital Management LP added | 87,879 | $31M | 0.3% | 2026-Q2 |
| AQR Arbitrage LLC new | 85,278 | $30M | 0.3% | 2026-Q2 |
| Fiera Capital Corp trimmed | 84,452 | $30M | 0.3% | 2026-Q2 |
| Trexquant Investment LP new | 81,234 | $29M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 80,672 | $29M | 0.3% | 2026-Q2 |
| Capula Management Ltd new | 80,000 | $28M | 0.3% | 2026-Q2 |
| TORONTO DOMINION BANK added | 74,202 | $26M | 0.3% | 2026-Q2 |
| Nuveen, LLC added | 74,195 | $26M | 0.3% | 2026-Q2 |
| Jupiter Topco LLC new | 72,713 | $26M | 0.3% | 2026-Q2 |
| Taconic Capital Advisors LP new | 72,222 | $31M | 0.3% | 2026-Q2 |
| Woodline Partners LP added | 68,000 | $24M | 0.3% | 2026-Q2 |
| Invesco Ltd. trimmed | 65,428 | $23M | 0.3% | 2026-Q2 |
| BANK OF NOVA SCOTIA added | 63,914 | $23M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 63,230 | $22M | 0.2% | 2026-Q2 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ trimmed | 58,492 | $21M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 56,501 | $20M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 54,898 | $19M | 0.2% | 2026-Q2 |
| Verition Fund Management LLC added | 53,548 | $23M | 0.3% | 2026-Q2 |
| Rafferty Asset Management, LLC added | 53,034 | $19M | 0.2% | 2026-Q2 |
| Hudson Bay Capital Management LP added | 52,531 | $22M | 0.2% | 2026-Q2 |
| E. Ohman J:or Asset Management AB added | 51,382 | $18M | 0.2% | 2026-Q2 |
| WATER ISLAND CAPITAL LLC new | 51,251 | $22M | 0.2% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 50,139 | $18M | 0.2% | 2026-Q2 |
| SOROS FUND MANAGEMENT LLC new | 50,000 | $21M | 0.2% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT new | 45,810 | $16M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 44,088 | $16M | 0.2% | 2026-Q2 |
| HARVEST MANAGEMENT LLC new | 43,692 | $19M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 41,730 | $15M | 0.2% | 2026-Q2 |
| Distillate Capital Partners LLC trimmed | 40,552 | $14M | 0.2% | 2026-Q2 |
| XTX Topco Ltd added | 40,332 | $14M | 0.2% | 2026-Q2 |
| Twin Securities, Inc. new | 39,948 | $14M | 0.2% | 2026-Q2 |
| Pictet Asset Management Holding SA trimmed | 38,394 | $14M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 38,147 | $14M | 0.1% | 2026-Q2 |
| EULAV Asset Management | 37,800 | $13M | 0.1% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC trimmed | 37,656 | $16M | 0.2% | 2026-Q2 |
| Quarry LP added | 37,514 | $16M | 0.2% | 2026-Q2 |
| Westchester Capital Management, LLC new | 37,399 | $16M | 0.2% | 2026-Q2 |
| Birnam Oak Advisors, LP new | 37,136 | $13M | 0.1% | 2026-Q2 |
| Yakira Capital Management, Inc. new | 36,908 | $16M | 0.2% | 2026-Q2 |
| BLUEFIN CAPITAL MANAGEMENT, LLC new | 36,054 | $13M | 0.1% | 2026-Q2 |
| Hosking Partners LLP trimmed | 35,180 | $12M | 0.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 34,566 | $12M | 0.1% | 2026-Q2 |
| BROWN ADVISORY INC trimmed | 33,412 | $12M | 0.1% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 33,000 | $12M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 32,659 | $12M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 32,242 | $11M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 29,760 | $11M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 28,990 | $10M | 0.1% | 2026-Q2 |
| NATIXIS added | 28,958 | $10M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 27,735 | $10M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.