L3VLUP
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 23 Jan 2026
Managers listing it
34
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 16 listed it in both
Shares listed
4,967,987
combined, among listed positions
Reported value
$2.8bn
combined, at the quarter end

Among the 92 comparable managers: 14 buyers (opened or added shares) and 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +329,035.

Managers listing MEDP in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

34 of 34 holders

ActionFiling
AQR Capital Management LLC1,349,703$758m0.40%Added+324,29317 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co547,078$307m0.26%Trimmed-37,71823 Jan 2026 (the filing on sec.gov)
D. E. Shaw & Co.528,232$297m0.16%Trimmed-71,90817 Feb 2026 (the filing on sec.gov)
Invesco Ltd482,625$271munder 0.1%Trimmed-54,78219 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC465,908$262m0.41%Trimmed-27,68012 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP375,033$211m0.12%Added+60,88313 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)203,721$114munder 0.1%Added+195,90717 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC139,361$78m0.28%Trimmed-51,63317 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc116,581$65munder 0.1%Added+14,25317 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd103,245$58munder 0.1%Added+9,96117 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp89,242$50m0.09%Added+66,23217 Feb 2026 (the filing on sec.gov)
Man Group PLC79,120$44m0.08%Trimmed-9,25817 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC59,740$34munder 0.1%Added+36,82717 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP57,381$32munder 0.1%Trimmed-27,98817 Feb 2026 (the filing on sec.gov)
Millennium Management LLC51,991$29munder 0.1%Trimmed-64,62017 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP47,802$27munder 0.1%Added+36,19817 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP44,951$25munder 0.1%Added+38,35913 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP40,960$23munder 0.1%Trimmed-47,24017 Feb 2026 (the filing on sec.gov)
Bridgewater Associates LP34,302$19m0.07%Added+1,07213 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC33,469$19munder 0.1%Added+22,93013 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP30,947$17munder 0.1%Trimmed-13417 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC28,289$16munder 0.1%Trimmed-26,97612 Feb 2026 (the filing on sec.gov)
Quantbot Technologies LP15,359$8.6m0.29%Trimmed-85310 Feb 2026 (the filing on sec.gov)
PDT Partners LLC12,895$7.2m0.47%Trimmed-3,02917 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC9,157$5.1munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, 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.
15 in Q3 2024 to 9 in Q2 2026

Tracked managers listing it, at least.

051015202017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MEDP by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20172$21mn.a.n.a.
Q2 20171$14mn.a.n.a.
Q3 20171$19mn.a.n.a.
Q4 20171$23mn.a.n.a.
Q1 20183$37mn.a.n.a.
Q2 20184$59mn.a.n.a.
Q3 201814$247mn.a.n.a.
Q4 20186$119mn.a.n.a.
Q1 20194$100mn.a.n.a.
Q2 20194$117mn.a.n.a.
Q3 20196$140mn.a.n.a.
Q4 20195$122mn.a.n.a.
Q1 20207$144mn.a.n.a.
Q2 20208$173mn.a.n.a.
Q3 202012$218mn.a.n.a.
Q4 20208$187mn.a.n.a.
Q1 20219$153mn.a.n.a.
Q2 20218$156mn.a.n.a.
Q3 202111$413mn.a.n.a.
Q4 202112$668mn.a.n.a.
Q1 20226$107mn.a.n.a.
Q2 20225$97mn.a.n.a.
Q3 20223$59mn.a.n.a.
Q4 202210$269mn.a.n.a.
Q1 202314$275mn.a.n.a.
Q2 202317$468mn.a.n.a.
Q3 202315$378mn.a.n.a.
Q4 202314$501m87
Q1 202417$1.2bn98
Q2 202418$1.3bn99
Q3 202415$918m96
Q4 202415$1.2bn96
Q1 202512$986m111
Q2 202514$1.2bn123
Q3 202517$1.9bn98
Q4 202514$2.1bn1421
Q1 202612$1.8bn1221
Q2 20269$2.7bn821

Compare with…

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

MEDP and LLY →MEDP and JNJ →MEDP and VRTX →Choose a stock to compare with MEDP →

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 MEDP, latest filings →Back to the 13F Explorer →