L3VLUP
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
33,397,988
combined, among listed positions
Reported value
$155m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 13 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -4,562,860.

Managers listing MPT in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
AQR Capital Management LLC11,057,099$51munder 0.1%Trimmed-2,358,16815 May 2026 (the filing on sec.gov)
Two Sigma Investments LP8,400,722$39munder 0.1%Added+4,535,03915 May 2026 (the filing on sec.gov)
Coatue Management LLC4,525,398$21m0.07%Held015 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP1,940,133$9.0munder 0.1%Trimmed-2,277,45315 May 2026 (the filing on sec.gov)
Invesco Ltd1,783,353$8.3munder 0.1%Added+95,70812 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,159,334$5.4munder 0.1%Added+956,72415 May 2026 (the filing on sec.gov)
Tudor Investment Corp983,804$4.6munder 0.1%Trimmed-821,22615 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC556,374$2.6munder 0.1%Added+424,31215 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc451,891$2.1munder 0.1%Added+34,98615 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP436,985$2.0munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Millennium Management LLC348,801$1.6munder 0.1%Added+190,89915 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)342,703$1.6munder 0.1%Added+60515 May 2026 (the filing on sec.gov)
Caxton Associates LLP316,136$1.5munder 0.1%Trimmed-302,17214 May 2026 (the filing on sec.gov)
AllianceBernstein LP267,692$1.3munder 0.1%Trimmed-36,35615 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd236,700$1.1munder 0.1%Held018 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC111,891$518kunder 0.1%Trimmed-271,83815 May 2026 (the filing on sec.gov)
Bridgewater Associates LP96,769$448kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC95,414$442kunder 0.1%Added+13,70527 Oct 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP91,800$425kunder 0.1%Trimmed-174,37215 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.82,996$384kunder 0.1%Added+30,40815 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC66,096$306kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC39,378$182kunder 0.1%Trimmed-128,69615 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP6,519$30kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
4 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

024682014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MPT by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20132$102mn.a.n.a.
Q3 20132$96mn.a.n.a.
Q4 20131$91mn.a.n.a.
Q1 20141$106mn.a.n.a.
Q2 20142$105mn.a.n.a.
Q3 20143$157mn.a.n.a.
Q4 20144$179mn.a.n.a.
Q1 20152$198mn.a.n.a.
Q2 20151$111mn.a.n.a.
Q3 20152$134mn.a.n.a.
Q4 20152$135mn.a.n.a.
Q1 20162$143mn.a.n.a.
Q2 20163$171mn.a.n.a.
Q3 20167$221mn.a.n.a.
Q4 20164$244mn.a.n.a.
Q1 20171$234mn.a.n.a.
Q2 20177$320mn.a.n.a.
Q3 20171$264mn.a.n.a.
Q4 20171$303mn.a.n.a.
Q1 20182$282mn.a.n.a.
Q2 20181$296mn.a.n.a.
Q3 20182$323mn.a.n.a.
Q4 20184$407mn.a.n.a.
Q1 20196$516mn.a.n.a.
Q2 20194$494mn.a.n.a.
Q3 20195$388mn.a.n.a.
Q4 20193$544mn.a.n.a.
Q1 20205$589mn.a.n.a.
Q2 20203$683mn.a.n.a.
Q3 20207$781mn.a.n.a.
Q4 20206$983mn.a.n.a.
Q1 20216$1.0bnn.a.n.a.
Q2 20218$947mn.a.n.a.
Q3 20217$885mn.a.n.a.
Q4 20216$958mn.a.n.a.
Q1 20226$827mn.a.n.a.
Q2 20224$595mn.a.n.a.
Q3 20228$350mn.a.n.a.
Q4 20225$226mn.a.n.a.
Q1 20236$80mn.a.n.a.
Q2 20233$70mn.a.n.a.
Q3 20235$65mn.a.n.a.
Q4 20232$35m11
Q1 20242$21m12
Q2 20243$14m21
Q3 20244$21m21
Q4 20241$67k02
Q1 20253$25m30
Q2 20254$48m40
Q3 20254$68m30
Q4 20255$56m1412
Q1 20262$22m1314
Q2 20261$21m1113

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MPT and WELL →MPT and EQIX →MPT and PLD →Choose a stock to compare with MPT →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MPT, latest filings →Back to the 13F Explorer →