Aldeyra Therapeutics, Inc. (ALDX) — Institutional Holders, Q2 2026

108 institutional investment managers reported a ALDX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $77.8M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← ALDX stock profile

ALDX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

Trimmed

Sold out

Biggest buyers

MARSHALL WACE, LLPAdded · +1,377,281 sh+$2.9M
Qube Research & Technologies LtdAdded · +1,041,725 sh+$2.2M
AQR CAPITAL MANAGEMENTAdded · +921,683 sh+$2.0M
D. E. ShawAdded · +536,348 sh+$1.1M
KINGDON CAPITAL MANAGEMENT, L.L.C.Added · +500,000 sh+$1.1M

Biggest sellers

BlackRockTrimmed · -2,506,644 sh-$5.3M
STATE STREETTrimmed · -890,936 sh-$1.9M
Propel Bio ManagementSold out · -730,606 sh-$1.6M
GEODE CAPITAL MANAGEMENTTrimmed · -655,623 sh-$1.4M
MILLENNIUM MANAGEMENTTrimmed · -634,893 sh-$1.4M

ALDX 13F holders ranked 1–100 of 108

Institutional investors reporting a position in Aldeyra Therapeutics, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	Knoll Capital Management#1 · 5,475,516 sh	5,475,516	$11.7M	6.50%	0.0%
2	AQR CAPITAL MANAGEMENT#2 · 3,751,558 sh	3,751,558	$8.0M	<0.01%	+32.6%
3	KINGDON CAPITAL MANAGEMENT, L.L.C.#3 · 2,652,315 sh	2,652,315	$5.6M	0.58%	+23.2%
4	VANGUARD CAPITAL MANAGEMENT#4 · 2,361,796 sh	2,361,796	$5.0M	<0.01%	-0.1%
5	D. E. Shaw#5 · 1,940,338 sh	1,940,338	$4.1M	<0.01%	+38.2%
6	MARSHALL WACE, LLP#6 · 1,506,974 sh	1,506,974	$3.2M	<0.01%	+1062.0%
7	683 Capital Management#7 · 1,450,000 sh	1,450,000	$3.1M	0.15%	-3.3%
8	JANE STREET GROUP#8 · 1,375,115 sh	1,375,115	$2.9M	<0.01%	+41.9%
9	BlackRock#9 · 1,257,243 sh	1,257,243	$2.7M	0.00%	-66.6%
10	Qube Research & Technologies Ltd#10 · 1,128,803 sh	1,128,803	$2.4M	<0.01%	+1196.3%
11	ACADIAN ASSET MANAGEMENT#11 · 1,063,793 sh	1,063,793	$2.3M	<0.01%	+23.9%
12	ARDSLEY ADVISORY PARTNERS#12 · 975,000 sh	975,000	$2.1M	0.22%	+2.6%
13	RENAISSANCE TECHNOLOGIES#13 · 882,000 sh	882,000	$1.9M	<0.01%	+2.2%
14	VANGUARD PORTFOLIO MANAGEMENT#14 · 794,863 sh	794,863	$1.7M	<0.01%	-1.6%
15	GOLDMAN SACHS GROUP#15 · 725,444 sh	725,444	$1.5M	<0.01%	+33.6%
16	JACOBS LEVY EQUITY MANAGEMENT#16 · 646,840 sh	646,840	$1.4M	<0.01%	-18.8%
17	MORGAN STANLEY#17 · 608,321 sh	608,321	$1.3M	<0.01%	+17.3%
18	GEODE CAPITAL MANAGEMENT#18 · 596,029 sh	596,029	$1.3M	<0.01%	-52.4%
19	DIMENSIONAL FUND ADVISORS#19 · 529,083 sh	529,083	$1.1M	<0.01%	-15.2%
20	GSA CAPITAL PARTNERS LLP#20 · 472,564 sh	472,564	$1.0M	0.06%	+91.2%
21	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#21 · 421,178 sh	421,178	$897.1K	<0.01%	New
22	CITADEL ADVISORS#22 · 379,144 sh	379,144	$807.6K	<0.01%	+42.4%
23	MILLENNIUM MANAGEMENT#23 · 360,350 sh	360,350	$767.5K	<0.01%	-63.8%
24	UBS Group AG#24 · 301,940 sh	301,940	$643.1K	<0.01%	-43.8%
25	VANGUARD FIDUCIARY#25 · 298,242 sh	298,242	$635.3K	<0.01%	-11.9%
26	XTX Topco Ltd#26 · 254,777 sh	254,777	$542.7K	<0.01%	+239.0%
27	WOODSTOCK#27 · 242,756 sh	242,756	$517.1K	—	-9.0%
28	STATE STREET#28 · 233,774 sh	233,774	$497.9K	0.00%	-79.2%
29	IEQ CAPITAL#29 · 206,593 sh	206,593	$440.0K	<0.01%	-22.5%
30	CANTOR FITZGERALD, L. P.#30 · 200,000 sh	200,000	$426.0K	<0.01%	New
31	Caption Management#31 · 165,000 sh	165,000	$351.4K	<0.01%	0.0%
32	WELLS FARGO & COMPANY#32 · 162,336 sh	162,336	$345.8K	<0.01%	-14.4%
33	Invesco Ltd.#33 · 159,540 sh	159,540	$339.8K	0.00%	-6.0%
34	BNP PARIBAS FINANCIAL MARKETS#34 · 157,248 sh	157,248	$334.9K	<0.01%	+427.4%
35	Palo Alto Investors#35 · 155,709 sh	155,709	$331.7K	0.05%	0.0%
36	Point72 Asset Management, L.P.#36 · 154,408 sh	154,408	$328.9K	<0.01%	New
37	Connor, Clark & Lunn Investment Management Ltd.#37 · 154,292 sh	154,292	$328.6K	<0.01%	New
38	Man Group plc#38 · 152,713 sh	152,713	$325.3K	<0.01%	New
39	Jain Global#39 · 131,502 sh	131,502	$280.1K	<0.01%	New
40	TWO SIGMA INVESTMENTS#40 · 127,849 sh	127,849	$272.3K	<0.01%	-42.8%
41	NORTHERN#41 · 108,888 sh	108,888	$231.9K	0.00%	-70.9%
42	JPMORGAN CHASE#42 · 109,578 sh	109,578	$224.6K	0.00%	+373.2%
43	KENNEDY CAPITAL MANAGEMENT#43 · 97,726 sh	97,726	$208.2K	<0.01%	+1.9%
44	CANADA PENSION PLAN INVESTMENT BOARD#44 · 94,300 sh	94,300	$200.9K	<0.01%	+98.9%
45	Squarepoint Ops#45 · 94,048 sh	94,048	$200.3K	<0.01%	New
46	Russell Investments Group, Ltd.#46 · 90,353 sh	90,353	$192.4K	<0.01%	+7.2%
47	Mariner#47 · 90,339 sh	90,339	$192.4K	<0.01%	-1.7%
48	ROYAL BANK OF CANADA#48 · 79,783 sh	79,783	$170.0K	0.00%	+5732.1%
49	Cerity Partners#49 · 72,712 sh	72,712	$154.9K	<0.01%	-10.5%
50	Chicago Partners Investment Group#50 · 83,984 sh	83,984	$130.2K	—	+330.2%
51	SUSQUEHANNA INTERNATIONAL GROUP, LLP#51 · 58,398 sh	58,398	$124.4K	0.00%	-79.0%
52	CAPTRUST FINANCIAL ADVISORS#52 · 51,778 sh	51,778	$110.3K	<0.01%	-2.2%
53	WEALTH ENHANCEMENT ADVISORY SERVICES#53 · 47,518 sh	47,518	$98.4K	—	-22.2%
54	Quadrature Capital Ltd#54 · 46,044 sh	46,044	$98.1K	<0.01%	New
55	Graham Capital Management, L.P.#55 · 43,556 sh	43,556	$92.8K	<0.01%	-15.6%
56	INTERNATIONAL ASSETS INVESTMENT MANAGEMENT#56 · 36,750 sh	36,750	$89.3K	<0.01%	-1.6%
57	Creative Planning#57 · 38,200 sh	38,200	$81.4K	0.00%	+32.3%
58	AlphaCentric Advisors#58 · 37,656 sh	37,656	$80.2K	0.07%	+1.4%
59	MERCER GLOBAL ADVISORS#59 · 36,901 sh	36,901	$78.6K	<0.01%	-2.2%
60	PRICE T ROWE ASSOCIATES#60 · 35,091 sh	35,091	$75.0K	0.00%	-52.4%
61	BANK OF AMERICA#61 · 33,925 sh	33,925	$72.3K	0.00%	-84.2%
62	TWO SIGMA SECURITIES#62 · 32,818 sh	32,818	$69.9K	<0.01%	New
63	SIMPLEX TRADING#63 · 28,957 sh	28,957	$61.7K	0.00%	New
64	SRS Capital Advisors#64 · 28,634 sh	28,634	$61.0K	<0.01%	+5915.5%
65	STATE OF WISCONSIN INVESTMENT BOARD#65 · 28,400 sh	28,400	$60.5K	<0.01%	New
66	Providence Wealth Advisors#66 · 25,000 sh	25,000	$58.9K	0.03%	0.0%
67	RHUMBLINE ADVISERS#67 · 26,652 sh	26,652	$56.8K	0.00%	-61.5%
68	Schonfeld Strategic Advisors#68 · 20,920 sh	20,920	$44.6K	<0.01%	New
69	SEI INVESTMENTS#69 · 20,739 sh	20,739	$44.2K	0.00%	New
70	Hikari Power Ltd#70 · 20,020 sh	20,020	$43.0K	<0.01%	0.0%
71	Federation des caisses Desjardins du Quebec#71 · 18,106 sh	18,106	$38.6K	<0.01%	0.0%
72	FMR#72 · 17,889 sh	17,889	$38.1K	0.00%	+8.4%
73	Vanguard Global Advisers#73 · 17,687 sh	17,687	$37.7K	0.00%	0.0%
74	LETKO, BROSSEAU & ASSOCIATES#74 · 17,300 sh	17,300	$36.8K	<0.01%	0.0%
75	Y-Intercept (Hong Kong) Ltd#75 · 17,084 sh	17,084	$36.4K	—	New
76	Merit Financial Group#76 · 16,664 sh	16,664	$35.5K	<0.01%	-15.3%
77	BRIGHTON JONES#77 · 16,144 sh	16,144	$34.4K	<0.01%	-27.3%
78	Virtu Financial#78 · 15,826 sh	15,826	$34.0K	<0.01%	New
79	StoneX Group#79 · 19,296 sh	19,296	$33.1K	<0.01%	New
80	Activest Wealth Management#80 · 15,000 sh	15,000	$31.9K	—	+275.0%
81	Cetera Investment Advisers#81 · 14,699 sh	14,699	$31.3K	0.00%	New
82	Focus Partners Wealth#82 · 13,863 sh	13,863	$29.5K	0.00%	-37.3%
83	LPL Financial#83 · 13,316 sh	13,316	$28.4K	0.00%	-43.1%
84	King Wealth Management Group#84 · 12,700 sh	12,700	$27.0K	<0.01%	+6.7%
85	INSPIRION WEALTH ADVISORS#85 · 10,000 sh	10,000	$24.3K	—	0.0%
86	Caitong International Asset Management , Ltd#86 · 10,863 sh	10,863	$23.1K	<0.01%	New
87	Global Retirement Partners#87 · 10,000 sh	10,000	$21.3K	<0.01%	—
88	Integrated Wealth Concepts#88 · 8,765 sh	8,765	$18.7K	<0.01%	-41.4%
89	BARCLAYS PLC#89 · 5,769 sh	5,769	$12.3K	0.00%	-41.8%
90	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#90 · 4,825 sh	4,825	$10.3K	0.00%	0.0%
91	Farther Finance Advisors#91 · 4,497 sh	4,497	$9.6K	—	+1.1%
92	EverSource Wealth Advisors#92 · 4,027 sh	4,027	$8.6K	<0.01%	+629.5%
93	Optiver Holding B.V.#93 · 4,022 sh	4,022	$8.6K	0.00%	-11.9%
94	Essential Partners#94 · 2,070 sh	2,070	$4.4K	—	-94.2%
95	RAFFA WEALTH MANAGEMENT#95 · 1,897 sh	1,897	$4.0K	<0.01%	0.0%
96	Allworth Financial#96 · 1,827 sh	1,827	$3.9K	0.00%	-12.4%
97	PNC FINANCIAL SERVICES GROUP#97 · 1,575 sh	1,575	$3.4K	0.00%	+326.8%
98	SBI Securities , Ltd.#98 · 1,423 sh	1,423	$3.0K	—	+441.1%
99	IFP Advisors#99 · 1,407 sh	1,407	$3.0K	—	-2.4%
100	ROTHSCHILD INVESTMENT#100 · 355 sh	355	$756.00	0.00%	-1.4%

Funds that sold out of ALDX in Q2 2026 (37)

Held ALDX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ALDX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Propel Bio Management730,606 sh	730,606	$1.2M
HRT FINANCIAL286,444 sh	286,444	$484.0K
ALLIANCEBERNSTEIN L.P.68,140 sh	68,140	$353.0K
ExodusPoint Capital Management167,604 sh	167,604	$283.3K
WELLINGTON MANAGEMENT GROUP LLP148,962 sh	148,962	$251.7K
CHARLES SCHWAB INVESTMENT MANAGEMENT139,029 sh	139,029	$235.0K
Bank of New York Mellon136,746 sh	136,746	$231.1K
FOX RUN MANAGEMENT, L.L.C.90,964 sh	90,964	$152.8K
STRS OHIO68,200 sh	68,200	$115.3K
FLOW TRADERS U.S.55,521 sh	55,521	$94.0K
DEUTSCHE BANK AG\50,271 sh	50,271	$85.0K
FIRST MANHATTAN34,745 sh	34,745	$58.7K
QUADRANT CAPITAL GROUP370 sh	370	$49.3K
MIRAE ASSET GLOBAL ETFS Ltd.25,815 sh	25,815	$43.6K
Nuveen21,266 sh	21,266	$35.9K
Police & Firemen's Retirement System of New Jersey18,181 sh	18,181	$30.7K
Focus Partners Advisor Solutions17,026 sh	17,026	$28.8K
MANUFACTURERS LIFE INSURANCE COMPANY, THE16,155 sh	16,155	$27.3K
Krilogy Financial14,459 sh	14,459	$26.0K
Abel Hall15,142 sh	15,142	$25.6K
Capital Advisors Wealth Management15,000 sh	15,000	$25.4K
INTECH INVESTMENT MANAGEMENT14,754 sh	14,754	$24.9K
CIBC Bancorp USA13,237 sh	13,237	$22.4K
Caerus Investment Advisors11,455 sh	11,455	$19.4K
Tower Research Capital (TRC)11,325 sh	11,325	$19.1K
NEW YORK STATE COMMON RETIREMENT FUND9,598 sh	9,598	$16.2K
Legal & General Group Plc4,940 sh	4,940	$8.3K
Ameritas Investment Partners3,846 sh	3,846	$6.5K
Quantbot Technologies3,795 sh	3,795	$6.4K
MAI Capital Management3,208 sh	3,208	$5.4K
FEDERATED HERMES2,962 sh	2,962	$5.0K
Sterling Capital Management621 sh	621	$1.0K
Root Financial Partners449 sh	449	$759.00
Versant Capital Management139 sh	139	$235.00
Basecamp Wealth Advisors109 sh	109	$184.00
JPL Wealth Management14 sh	14	$24.00
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2,937 sh	2,937	—

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.