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Institutional Ownership · SEC Form 13F

Who owns MAA (MAA)


Which tracked institutional funds hold MAA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MAA company fundamentals →

Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

747
Institutional holders
106,414,345
Shares held (tracked funds)
91.0%
Of shares outstanding

How the tape is positioned

127 tracked funds added or opened MAA while 237 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

MAA’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MAA more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in MAA 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 2025-Q4 and 2026-Q1, across 747 tracked filers holding MAA, 367 increased or opened the position and 389 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.

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

Funds opening or closing a position in MAA between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 40

  • VANGUARD PORTFOLIO MANAGEMENT LLC$1.2B
  • VANGUARD CAPITAL MANAGEMENT LLC$928M
  • VANGUARD FIDUCIARY TRUST CO$80M
  • Vanguard Global Advisers, LLC$31M
  • VANGUARD ASSET MANAGEMENT, Ltd$25M
  • Point72 Asset Management, L.P.$20M

Full exits 34

  • VANGUARD GROUP INC$2.6B
  • Alyeska Investment Group, L.P.$51M
  • Hudson Bay Capital Management LP$35M
  • Capital World Investors$32M
  • Clarkston Capital Partners, LLC$29M
  • Gillson Capital LP$21M

Largest adds

  • NORGES BANK$146M
  • JPMORGAN CHASE & CO$72M
  • CENTERSQUARE INVESTMENT MANAGEMENT LLC$54M
  • SG Americas Securities, LLC$51M
  • VIKING GLOBAL INVESTORS LP$47M
  • River Road Asset Management, LLC$44M

Largest trims

  • BlackRock, Inc.$551M
  • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$164M
  • STATE STREET CORP$145M
  • CITADEL ADVISORS LLC$121M
  • Nuveen, LLC$120M
  • NORTHERN TRUST CORP$84M

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
BlackRock, Inc. trimmed10,088,257$1.2B8.2%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new9,907,327$1.2B8.1%2026-Q1
STATE STREET CORP trimmed8,004,531$978M6.5%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new7,595,270$928M6.2%2026-Q1
NORGES BANK trimmed5,349,701$897M6.0%2026-Q1
VIKING GLOBAL INVESTORS LP added4,798,404$586M3.9%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added3,496,589$426M2.8%2026-Q1
APG Asset Management US Inc. added3,089,712$379M2.5%2026-Q1
JPMORGAN CHASE & CO added2,905,831$354M2.4%2026-Q1
Invesco Ltd. added2,333,769$285M1.9%2026-Q1
DIMENSIONAL FUND ADVISORS LP added1,772,445$216M1.4%2026-Q1
NORTHERN TRUST CORP trimmed1,746,111$213M1.4%2026-Q1
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed1,664,943$211M1.4%2026-Q1
MORGAN STANLEY trimmed1,598,100$195M1.3%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added1,595,031$195M1.3%2026-Q1
GOLDMAN SACHS GROUP INC added1,477,799$180M1.2%2026-Q1
River Road Asset Management, LLC added1,428,079$174M1.2%2026-Q1
DEUTSCHE BANK AG\ trimmed1,407,691$172M1.1%2026-Q1
BARROW HANLEY MEWHINNEY & STRAUSS LLC trimmed1,252,190$153M1.0%2026-Q1
Legal & General Group Plc trimmed1,148,557$140M0.9%2026-Q1
1832 Asset Management L.P. added1,052,909$129M0.9%2026-Q1
DUFF & PHELPS INVESTMENT MANAGEMENT CO trimmed849,743$104M0.7%2026-Q1
BANK OF AMERICA CORP /DE/ added841,563$103M0.7%2026-Q1
AQR CAPITAL MANAGEMENT LLC added777,177$95M0.6%2026-Q1
UBS Group AG added690,447$84M0.6%2026-Q1
VANGUARD FIDUCIARY TRUST CO new657,925$80M0.5%2026-Q1
Bank of New York Mellon Corp trimmed645,729$79M0.5%2026-Q1
CENTERSQUARE INVESTMENT MANAGEMENT LLC added620,175$76M0.5%2026-Q1
RAYMOND JAMES FINANCIAL INC added535,621$65M0.4%2026-Q1
Amundi added517,233$63M0.4%2026-Q1
SG Americas Securities, LLC added512,086$63M0.4%2026-Q1
Quantinno Capital Management LP added503,350$61M0.4%2026-Q1
ALLIANCEBERNSTEIN L.P. trimmed423,540$59M0.4%2026-Q1
TEACHER RETIREMENT SYSTEM OF TEXAS added444,253$54M0.4%2026-Q1
HSBC HOLDINGS PLC added439,822$54M0.4%2026-Q1
CRAWFORD INVESTMENT COUNSEL INC added439,012$54M0.4%2026-Q1
ANCHOR CAPITAL ADVISORS LLC added422,083$52M0.3%2026-Q1
Nuveen, LLC trimmed409,909$50M0.3%2026-Q1
WELLINGTON MANAGEMENT GROUP LLP trimmed383,130$47M0.3%2026-Q1
Gotham Asset Management, LLC added380,105$46M0.3%2026-Q1
DIAMOND HILL CAPITAL MANAGEMENT INC trimmed371,994$45M0.3%2026-Q1
State of Tennessee, Department of Treasury added367,083$45M0.3%2026-Q1
FRANKLIN RESOURCES INC trimmed365,359$45M0.3%2026-Q1
Aberdeen Group plc added362,218$44M0.3%2026-Q1
JANUS HENDERSON GROUP PLC trimmed361,577$44M0.3%2026-Q1
Mitsubishi UFJ Asset Management Co., Ltd. added356,846$44M0.3%2026-Q1
FIRST TRUST ADVISORS LP added350,198$43M0.3%2026-Q1
Sumitomo Mitsui Trust Group, Inc. trimmed347,792$42M0.3%2026-Q1
Russell Investments Group, Ltd. trimmed346,380$42M0.3%2026-Q1
Swiss National Bank added343,576$42M0.3%2026-Q1
SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed320,772$39M0.3%2026-Q1
CITADEL ADVISORS LLC trimmed309,655$38M0.3%2026-Q1
PRUDENTIAL FINANCIAL INC trimmed309,551$38M0.3%2026-Q1
BARCLAYS PLC trimmed306,681$37M0.3%2026-Q1
CITIGROUP INC added284,069$35M0.2%2026-Q1
WELLS FARGO & COMPANY/MN added274,556$34M0.2%2026-Q1
California Public Employees Retirement System trimmed269,258$33M0.2%2026-Q1
Vanguard Global Advisers, LLC new254,909$31M0.2%2026-Q1
BNP PARIBAS FINANCIAL MARKETS trimmed245,272$30M0.2%2026-Q1
MILLENNIUM MANAGEMENT LLC trimmed239,282$29M0.2%2026-Q1
CANADA LIFE ASSURANCE Co trimmed236,900$29M0.2%2026-Q1
RHUMBLINE ADVISERS trimmed236,729$29M0.2%2026-Q1
Quinn Opportunity Partners LLC233,500$29M0.2%2026-Q1
ENVESTNET ASSET MANAGEMENT INC trimmed229,322$28M0.2%2026-Q1
Heitman Real Estate Securities LLC trimmed225,761$28M0.2%2026-Q1
Asset Management One Co., Ltd. trimmed225,678$28M0.2%2026-Q1
NOMURA ASSET MANAGEMENT CO LTD added221,995$27M0.2%2026-Q1
Starwood Capital Group Management, L.L.C.219,407$27M0.2%2026-Q1
Perpetual Ltd added211,902$26M0.2%2026-Q1
VANGUARD ASSET MANAGEMENT, Ltd new205,028$25M0.2%2026-Q1
SNYDER CAPITAL MANAGEMENT L P trimmed189,684$23M0.2%2026-Q1
Lighthouse Investment Partners, LLC added186,538$23M0.2%2026-Q1
Investure, LLC added185,368$23M0.2%2026-Q1
ROYAL BANK OF CANADA trimmed180,122$22M0.1%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed173,210$21M0.1%2026-Q1
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed173,037$21M0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ trimmed168,913$21M0.1%2026-Q1
MARSHALL WACE, LLP trimmed168,206$21M0.1%2026-Q1
TUDOR INVESTMENT CORP ET AL added167,087$20M0.1%2026-Q1
Point72 Asset Management, L.P. added162,841$20M0.1%2026-Q1
PRINCIPAL FINANCIAL GROUP INC trimmed158,619$19M0.1%2026-Q1
Adelante Capital Management LLC added156,165$19M0.1%2026-Q1
Allianz Asset Management GmbH added154,102$19M0.1%2026-Q1
CIBC Asset Management Inc added149,061$18M0.1%2026-Q1
CWM, LLC added147,122$18M0.1%2026-Q1
BANK OF MONTREAL /CAN/ added145,019$18M0.1%2026-Q1
Swedbank AB trimmed138,587$17M0.1%2026-Q1
VANGUARD GROUP INC trimmed18,444,420$2.6B17.1%2025-Q4 stale
CANADA PENSION PLAN INVESTMENT BOARD1,060,363$178M1.2%2025-Q1 stale
Alyeska Investment Group, L.P. new366,351$51M0.3%2025-Q4 stale
Hudson Bay Capital Management LP added253,231$35M0.2%2025-Q4 stale
Capital World Investors trimmed229,144$32M0.2%2025-Q4 stale
Clarkston Capital Partners, LLC added210,480$29M0.2%2025-Q4 stale
Sabal Trust CO trimmed151,380$25M0.2%2025-Q1 stale
Gillson Capital LP added153,133$21M0.1%2025-Q4 stale
Nixon Capital, LLC new144,034$20M0.1%2025-Q4 stale
ALGEBRIS (UK) LTD added132,098$18M0.1%2025-Q4 stale
Capital International, Inc./CA/ added125,763$18M0.1%2025-Q3 stale
ExodusPoint Capital Management, LP added121,587$17M0.1%2025-Q3 stale
Andra AP-fonden trimmed121,000$17M0.1%2025-Q4 stale

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.

HoldersTotal shares

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.

Learn how to read institutional ownership