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ILMN in the 13F filings

Illumina Inc · CUSIP 452327109

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 7 listed it in both
Shares listed
37,797,879
combined, among listed positions
Reported value
$5.0bn
combined, at the quarter end

Among the 92 comparable managers: 21 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,015,021.

Managers listing ILMN 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.

31 of 31 holders

ActionFiling
Capital World Investors20,101,173$2.6bn0.36%Added+124,32311 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC4,426,126$581m0.30%Added+1,028,09917 Feb 2026 (the filing on sec.gov)
Invesco Ltd2,747,986$360munder 0.1%Added+1,352,73119 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd2,071,544$272m0.12%Added+41,74717 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,694,354$222munder 0.1%Added+123,63117 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co1,626,776$213m0.18%Trimmed-59,91623 Jan 2026 (the filing on sec.gov)
ARK Investment Management LLC1,540,351$202m1.34%Added+72,47211 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,134,642$149m0.23%Trimmed-70,30012 Feb 2026 (the filing on sec.gov)
MFS Investment Management560,632$74munder 0.1%Newnew22 Jan 2026 (the filing on sec.gov)
Arrowstreet Capital LP496,793$65munder 0.1%Added+269,15313 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP236,812$31munder 0.1%Added+1,45917 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP180,437$24munder 0.1%Added+114,52717 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP146,478$19munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc133,917$18munder 0.1%Added+4,36017 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP130,876$17munder 0.1%Added+109,76917 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC127,050$17munder 0.1%Trimmed-52,64810 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC89,175$12munder 0.1%Added+46,37017 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC70,604$9.3munder 0.1%Added+5,28227 Oct 2026 (the filing on sec.gov)
Two Sigma Investments LP54,317$7.1munder 0.1%Added+9,91917 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC42,689$5.6munder 0.1%Trimmed-10,79813 Feb 2026 (the filing on sec.gov)
Millennium Management LLC35,351$4.6munder 0.1%Trimmed-295,38917 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC34,156$4.5munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP23,800$3.1munder 0.1%Trimmed-14,10017 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.23,419$3.1munder 0.1%Added+13,63517 Feb 2026 (the filing on sec.gov)
Man Group PLC18,856$2.5munder 0.1%Trimmed-51,24417 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.

New (5)

Exited (4)

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.
22 in Q3 2024 to 13 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ILMN by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201316$4.0bnn.a.n.a.
Q3 201315$4.5bnn.a.n.a.
Q4 201319$6.8bnn.a.n.a.
Q1 201424$8.9bnn.a.n.a.
Q2 201416$9.2bnn.a.n.a.
Q3 201424$8.4bnn.a.n.a.
Q4 201423$8.8bnn.a.n.a.
Q1 201521$9.1bnn.a.n.a.
Q2 201522$11.1bnn.a.n.a.
Q3 201521$8.7bnn.a.n.a.
Q4 201515$9.4bnn.a.n.a.
Q1 201612$6.9bnn.a.n.a.
Q2 201612$6.3bnn.a.n.a.
Q3 201615$8.3bnn.a.n.a.
Q4 201614$6.2bnn.a.n.a.
Q1 201715$8.1bnn.a.n.a.
Q2 201721$7.7bnn.a.n.a.
Q3 201721$8.4bnn.a.n.a.
Q4 201717$8.7bnn.a.n.a.
Q1 201819$9.1bnn.a.n.a.
Q2 201825$10.9bnn.a.n.a.
Q3 201826$11.8bnn.a.n.a.
Q4 201825$9.2bnn.a.n.a.
Q1 201921$9.6bnn.a.n.a.
Q2 201923$12.0bnn.a.n.a.
Q3 201921$11.2bnn.a.n.a.
Q4 201919$11.7bnn.a.n.a.
Q1 202020$8.8bnn.a.n.a.
Q2 202019$11.9bnn.a.n.a.
Q3 202019$9.2bnn.a.n.a.
Q4 202022$11.9bnn.a.n.a.
Q1 202127$13.7bnn.a.n.a.
Q2 202123$16.3bnn.a.n.a.
Q3 202131$14.7bnn.a.n.a.
Q4 202122$13.3bnn.a.n.a.
Q1 202220$12.1bnn.a.n.a.
Q2 202221$6.3bnn.a.n.a.
Q3 202218$7.3bnn.a.n.a.
Q4 202213$7.7bnn.a.n.a.
Q1 202322$8.9bnn.a.n.a.
Q2 202315$6.8bnn.a.n.a.
Q3 202314$4.6bnn.a.n.a.
Q4 202321$3.6bn129
Q1 202416$3.4bn811
Q2 202422$2.3bn184
Q3 202422$2.9bn138
Q4 202416$4.1bn514
Q1 202511$2.3bn84
Q2 20258$2.5bn35
Q3 20259$2.9bn73
Q4 202510$4.6bn2114
Q1 202613$3.9bn1519
Q2 202613$5.9bn1518

Compare with…

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

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

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