ORKA in the 13F filings

Oruka Therapeutics Inc · CUSIP 687604108

Sector · Pharmaceuticals and biotechnology Theme · Healthcare: biopharma and medtech· L3VLUP-defined Theme · Pharmaceutical preparations

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q4 2024 Q3 2024

Quarter end: 30 Jun 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 3 Aug 2026
Managers listing it: 21; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 4 listed it in both
Shares listed: 18,842,169; combined, among listed positions
Reported value: $1.8bn; 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: 17 buyers (opened or added shares) and 6 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +5,807,556.

Managers listing ORKA in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

21 of 21 holders

				Action		Filing
Fidelity (FMR LLC)	9,057,645	$862m	under 0.1%	Added	+1,626,242	13 Aug 2026 (the filing on sec.gov)
Capital World Investors	3,401,639	$324m	under 0.1%	New	new	12 Aug 2026 (the filing on sec.gov)
Viking Global Investors LP	1,503,478	$143m	0.41%	Trimmed	-1,163,212	14 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	1,375,844	$131m	0.05%	Added	+1,363,744	14 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	1,119,011	$106m	under 0.1%	Added	+111,474	2 Sep 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	838,603	$80m	under 0.1%	Added	+111,154	14 Aug 2026 (the filing on sec.gov)
MFS Investment Management	364,102	$35m	under 0.1%	New	new	3 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP	305,951	$29m	0.07%	Added	+120,438	14 Aug 2026 (the filing on sec.gov)
Woodline Partners LP	285,247	$27m	0.08%	Trimmed	-289,635	14 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP	148,212	$14m	0.09%	Added	+46,858	14 Aug 2026 (the filing on sec.gov)
Invesco Ltd	124,658	$12m	under 0.1%	Added	+27,616	14 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP	119,601	$11m	under 0.1%	Trimmed	-1,624	14 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	34,860	$3.3m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP	66,080	$3.2m	under 0.1%	Added	+25,680	14 Aug 2026 (the filing on sec.gov)
Millennium Management LLC	32,866	$3.1m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Freestone Grove Partners LP	22,421	$2.1m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC	18,697	$1.8m	under 0.1%	Added	+14,490	14 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	11,586	$1.1m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP	4,870	$463k	under 0.1%	New	new	12 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP	4,588	$437k	under 0.1%	Trimmed	-16,396	14 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	2,210	$210k	under 0.1%	New	new	27 Oct 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Capital World Investorsnew position · 3,401,639 shares now+3,401,639
Fidelity (FMR LLC)existing position · 9,057,645 shares now+1,626,242
Janus Henderson Group Ltdexisting position · 1,375,844 shares now+1,363,744
MFS Investment Managementnew position · 364,102 shares now+364,102
Holocene Advisors LPexisting position · 305,951 shares now+120,438

Reductions

Viking Global Investors LPexisting position · 1,503,478 shares now-1,163,212
Woodline Partners LPexisting position · 285,247 shares now-289,635
Susquehanna International Group LLPexisting position · 4,588 shares now-16,396
Wellington Management Group LLPexisting position · 119,601 shares now-1,624

New positions and exits

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

New (8)

Exited (2)

Squarepoint Ops LLCwas $1.2m
Two Sigma Investments LPwas $950k

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.

1 in Q3 2024 to 8 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

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

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

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

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Quarter	Holders	Reported value	Buyers	Sellers
Q3 2024	1	$9.6m	1	0
Q4 2024	1	$7.6m	1	0
Q3 2025	2	$62m	2	0
Q4 2025	2	$98m	14	3
Q1 2026	4	$173m	10	10
Q2 2026	8	$1.5bn	17	6