AXTI in the 13F filings

Axt Inc · CUSIP 00246W103

Sector · Semiconductors Theme · AI infrastructure and semiconductors· L3VLUP-defined Theme · Semiconductors

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2020 Q2 2020 Q1 2020 Q2 2017

Quarter end: 31 Mar 2026; the date the book describes
Filed: 18 May 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 20; 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: 6,517,381; combined, among listed positions
Reported value: $371m; combined, at the quarter end

Among the 91 comparable managers: 10 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,662,267.

Managers listing AXTI 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.

ActionShare of book at least

20 of 20 holders

				Action		Filing
Jane Street Group LLC	2,426,232	$138m	under 0.1%	Added	+1,521,633	12 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	909,753	$52m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	776,256	$44m	under 0.1%	Added	+332,476	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	739,194	$42m	under 0.1%	Added	+533,691	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	569,671	$32m	under 0.1%	Trimmed	-207,166	15 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP	330,788	$19m	0.14%	New	new	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	301,615	$17m	under 0.1%	Trimmed	-402,713	15 May 2026 (the filing on sec.gov)
Marshall Wace LLP	120,388	$6.9m	under 0.1%	Trimmed	-71,662	15 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	74,979	$4.3m	under 0.1%	Added	+54,250	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	65,100	$3.7m	under 0.1%	Trimmed	-453,551	15 May 2026 (the filing on sec.gov)
Polen Capital Management LLC	49,368	$2.8m	under 0.1%	Added	+27,153	14 May 2026 (the filing on sec.gov)
Verition Fund Management LLC	37,000	$2.1m	under 0.1%	Added	+18,618	15 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP	29,536	$1.7m	under 0.1%	Trimmed	-37,960	13 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	28,423	$1.6m	under 0.1%	Trimmed	-221,397	15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	24,500	$1.4m	under 0.1%	New	new	18 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	21,631	$1.2m	under 0.1%	Trimmed	-16,218	15 May 2026 (the filing on sec.gov)
Invesco Ltd	7,187	$410k	under 0.1%	New	new	12 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	4,300	$245k	under 0.1%	Trimmed	-1,511,856	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	1,126	$64k	under 0.1%	Trimmed	-1,342	15 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC	334	$19k	under 0.1%	Trimmed	-568,997	13 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

Jane Street Group LLCexisting position · 2,426,232 shares now+1,521,633
T. Rowe Price Associates Incnew position · 909,753 shares now+909,753
Millennium Management LLCexisting position · 739,194 shares now+533,691
D. E. Shaw & Co.existing position · 776,256 shares now+332,476
Rokos Capital Management LLPnew position · 330,788 shares now+330,788

Reductions

Point72 Asset Management LPexisting position · 4,300 shares now-1,511,856
Acadian Asset Management LLCexisting position · 334 shares now-568,997
Two Sigma Investments LPexisting position · 65,100 shares now-453,551
Susquehanna International Group LLPexisting position · 301,615 shares now-402,713
Schonfeld Strategic Advisors LLCexisting position · 28,423 shares now-221,397

New positions and exits

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

New (4)

Exited (4)

Davidson Kempner Capital Management LPwas $45m
Walleye Capital LLCwas $1.5m
Renaissance Technologies LLCwas $1.4m
Tudor Investment Corpwas $278k

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 Q2 2017 to 5 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.

AXTI and NVDA →AXTI and AVGO →AXTI and MU →Choose a stock to compare with AXTI →

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

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Quarter	Holders	Reported value	Buyers	Sellers
Q2 2017	1	$635k	n.a.	n.a.
Q1 2020	1	$583k	n.a.	n.a.
Q2 2020	1	$776k	n.a.	n.a.
Q3 2020	1	$668k	n.a.	n.a.
Q4 2025	3	$54m	20	1
Q1 2026	3	$26m	10	14
Q2 2026	5	$451m	25	8