OPENL

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-0.02 (-9.88%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding OPENL · 2026-Q1 methodology → sources →

128 holders

% of shares outstanding held

—

Shares held (13F)

7,235,023

Reporting holders

128

Top holders

largest 100 of 128 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Caption Management, LLC	2,291,6292.3M	$563,741	—	—
2	MORGAN STANLEY	886,166886,166	$217,997	—	—
3	Lennar Corp /New/	626,198626,198	$154,045	—	—
4	ARISTEIA CAPITAL, L.L.C.	588,466588,466	$145,940	—	ADD 5%
5	Kultura Capital Management LP	16,33316,333	$135,891	—	—
6	Skaana Management L.P.	469,067469,067	$115,390	—	ADD 7%
7	JANE STREET GROUP, LLC	442,111442,111	$108,759	—	TRIM -45%
8	Virtu Financial LLC	261,566261,566	$64,000	—	ADD 53%
9	KESTRA PRIVATE WEALTH SERVICES, LLC	165,599165,599	$40,737	—	ADD 221%
10	STATE STREET CORP	141,510141,510	$34,811	—	—
11	Hudson Bay Capital Management LP	104,501104,501	$25,708	—	TRIM -56%
12	GEODE CAPITAL MANAGEMENT, LLC	100,176100,176	$24,631	—	—
13	Graham Capital Management, L.P.	92,86992,869	$22,846	—	—
14	Ionic Capital Management LLC	91,62791,627	$22,540	—	ADD 51%
15	TORNO CAPITAL, LLC	75,00075,000	$18,450	—	ADD 200%
16	LMR Partners LLP	70,00070,000	$17,220	—	—
17	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	66,66666,666	$16,400	—	—
18	AQR CAPITAL MANAGEMENT LLC	65,02365,023	$15,996	—	—
19	Walleye Capital LLC	53,47053,470	$13,154	—	TRIM -92%
20	HRT FINANCIAL LP	53,63153,631	$13,000	—	NEW
21	Point72 Asset Management, L.P.	48,65748,657	$11,970	—	ADD 166%
22	IEQ CAPITAL, LLC	42,71842,718	$10,509	—	TRIM -56%
23	PEAK6 LLC	40,10240,102	$9,865	—	ADD 88%
24	CITADEL ADVISORS LLC	31,65031,650	$7,786	—	TRIM -77%
25	LPL Financial LLC	25,42425,424	$6,253	—	TRIM -51%
26	Balyasny Asset Management L.P.	23,96823,968	$5,944	—	—
27	Susquehanna Portfolio Strategies, LLC	23,75123,751	$5,843	—	—
28	Squarepoint Ops LLC	22,60522,605	$5,561	—	TRIM -21%
29	SUSQUEHANNA INTERNATIONAL GROUP, LLP	21,02221,022	$5,171	—	—
30	Legal & General Group Plc	19,03519,035	$4,721	—	NEW
31	Amundi	18,77018,770	$4,617	—	NEW
32	SIGNATUREFD, LLC	17,15817,158	$4,221	—	—
33	Tower Research Capital LLC (TRC)	15,70415,704	$3,884	—	ADD 50%
34	NWAM LLC	14,68314,683	$3,612	—	—
35	GROUP ONE TRADING LLC	13,71613,716	$3,374	—	TRIM -54%
36	JANUS HENDERSON GROUP PLC	13,23513,235	$3,282	—	—
37	Prentice Capital Management, LP	12,97012,970	$3,191	—	TRIM -50%
38	UBS Group AG	12,48812,488	$3,072	—	TRIM -62%
39	Universal- Beteiligungs- und Servicegesellschaft mbH	11,44011,440	$2,814	—	—
40	CAPSTONE INVESTMENT ADVISORS, LLC	10,43510,435	$2,567	—	NEW
41	WOLVERINE ASSET MANAGEMENT LLC	7,3927,392	$1,818	—	TRIM -60%
42	MIRABELLA FINANCIAL SERVICES LLP	55,17055,170	$1,722	—	NEW
43	KLP KAPITALFORVALTNING AS	6,2966,296	$1,549	—	—
44	INTACT INVESTMENT MANAGEMENT INC.	5,8145,814	$1,430	—	—
45	Qube Research & Technologies Ltd	5,3275,327	$1,310	—	—
46	EQUITEC PROPRIETARY MARKETS, LLC	5,0005,000	$1,230	—	TRIM -67%
47	AlphaCore Capital LLC	4,9734,973	$1,223	—	ADD 93%
48	Wilmington Savings Fund Society, FSB	4,6494,649	$1,153	—	ADD 4%
49	BlackRock, Inc.	4,4064,406	$1,084	—	TRIM -96%
50	Zurcher Kantonalbank (Zurich Cantonalbank)	4,3944,394	$1,081	—	—
51	BANK OF MONTREAL /CAN/	3,6773,677	$905	—	TRIM -25%
52	TWIN PEAKS WEALTH ADVISORS, LLC	2,6232,623	$645	—	NEW
53	OSAIC HOLDINGS, INC.	2,1392,139	$510	—	TRIM -19%
54	Activest Wealth Management	1,8331,833	$451	—	—
55	Marathon Trading Investment Management LLC	1,7731,773	$436	—	—
56	JONES FINANCIAL COMPANIES LLLP	1,4451,445	$410	—	TRIM -19%
57	BLAIR WILLIAM & CO/IL	1,6661,666	$410	—	TRIM -4%
58	INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC	1,5261,526	$372	—	—
59	Federation des caisses Desjardins du Quebec	1,4111,411	$347	—	—
60	ADVENT CAPITAL MANAGEMENT /DE/	1,1991,199	$295	—	—
61	BNP PARIBAS FINANCIAL MARKETS	1,1891,189	$292	—	—
62	SOROS FUND MANAGEMENT LLC	1,1021,102	$271	—	ADD 451%
63	WELLS FARGO & COMPANY/MN	969969	$239	—	ADD 4%
64	CWM, LLC	779779	$192	—	TRIM -5%
65	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	625625	$153	—	ADD 1589%
66	BARCLAYS PLC	541541	$133	—	TRIM -25%
67	Advisory Services Network, LLC	397397	$98	—	NEW
68	Meramec Financial Planners, LLC	173173	$68	—	—
69	DANSKE BANK A/S	192192	$47	—	TRIM -51%
70	Allworth Financial LP	147147	$37	—	—
71	Crewe Advisors LLC	150150	$37	—	—
72	MILLER WEALTH ADVISORS, LLC	135135	$33	—	—
73	Bogart Wealth, LLC	116116	$29	—	—
74	HARBOUR INVESTMENTS, INC.	113113	$28	—	ADD 242%
75	Synergy Investment Management, LLC	107107	$26	—	NEW
76	Resolute Advisors LLC	100100	$25	—	NEW
77	Nemes Rush Group LLC	8383	$20	—	—
78	Aspect Partners, LLC	8383	$20	—	NEW
79	Avalon Trust Co	7676	$19	—	—
80	FINANCIAL CONSULATE, INC	7171	$18	—	—
81	IFP Advisors, Inc	7575	$18	—	—
82	Inspire Investing, LLC	7272	$18	—	—
83	Center for Financial Planning, Inc.	6666	$17	—	—
84	Quent Capital, LLC	7070	$17	—	—
85	Farther Finance Advisors, LLC	7070	$17	—	TRIM -50%
86	TD Waterhouse Canada Inc.	6666	$16	—	ADD 5%
87	Gen-Wealth Partners Inc	6767	$16	—	NEW
88	Arax Advisory Partners	5959	$15	—	TRIM -29%
89	PNC FINANCIAL SERVICES GROUP, INC.	5353	$13	—	ADD 165%
90	US BANCORP \DE\	5050	$12	—	TRIM -73%
91	SouthState Bank Corp	4848	$12	—	—
92	Steward Partners Investment Advisory, LLC	4343	$11	—	TRIM -25%
93	AdvisorNet Financial, Inc	3939	$10	—	TRIM -95%
94	Parallel Advisors, LLC	3838	$9	—	TRIM -5%
95	Larson Financial Group LLC	3838	$9	—	—
96	WOLFF WIESE MAGANA LLC	3333	$9	—	—
97	True Wealth Design, LLC	3636	$9	—	—
98	Annis Gardner Whiting Capital Advisors, LLC	3333	$9	—	—
99	BROWN BROTHERS HARRIMAN & CO	3232	$8	—	—
100	Beaird Harris Wealth Management, LLC	2626	$7	—	TRIM -38%

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder	2024-Q4	2025-Q1	2025-Q2	2025-Q3	2025-Q4	2026-Q1	Latest value
Caption Management, LLC	—	—	—	—	2.3M	2.3M	$563,741
MORGAN STANLEY	—	—	—	—	896K	886K	$217,997
Lennar Corp /New/	—	—	—	—	626K	626K	$154,045
ARISTEIA CAPITAL, L.L.C.	—	—	—	—	560K	588K	$145,940
Kultura Capital Management LP	—	—	—	—	16K	16K	$135,891
Skaana Management L.P.	—	—	—	—	439K	469K	$115,390
JANE STREET GROUP, LLC	—	—	—	—	807K	442K	$108,759
Virtu Financial LLC	—	—	—	—	171K	262K	$64,000
KESTRA PRIVATE WEALTH SERVICES, LLC	—	—	—	—	52K	166K	$40,737
STATE STREET CORP	—	—	—	—	142K	142K	$34,811
Hudson Bay Capital Management LP	—	—	—	—	235K	105K	$25,708
GEODE CAPITAL MANAGEMENT, LLC	—	—	—	—	100K	100K	$24,631
Graham Capital Management, L.P.	—	—	—	—	93K	93K	$22,846
Ionic Capital Management LLC	—	—	—	—	61K	92K	$22,540
TORNO CAPITAL, LLC	—	—	—	—	25K	75K	$18,450

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	128	7,235,023	—	$2M
2025-Q4	145	10,550,873	—	$5M
2025-Q3	1	3	—	$2

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Institutional ownership· 13F filers holding OPENL · 2026-Q1 methodology → sources →

128 holders

% of shares outstanding held

—

Shares held (13F)

7,235,023

Reporting holders

128

Top holders

largest 100 of 128 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Caption Management, LLC	2,291,6292.3M	$563,741	—	—
2	MORGAN STANLEY	886,166886,166	$217,997	—	—
3	Lennar Corp /New/	626,198626,198	$154,045	—	—
4	ARISTEIA CAPITAL, L.L.C.	588,466588,466	$145,940	—	ADD 5%
5	Kultura Capital Management LP	16,33316,333	$135,891	—	—
6	Skaana Management L.P.	469,067469,067	$115,390	—	ADD 7%
7	JANE STREET GROUP, LLC	442,111442,111	$108,759	—	TRIM -45%
8	Virtu Financial LLC	261,566261,566	$64,000	—	ADD 53%
9	KESTRA PRIVATE WEALTH SERVICES, LLC	165,599165,599	$40,737	—	ADD 221%
10	STATE STREET CORP	141,510141,510	$34,811	—	—
11	Hudson Bay Capital Management LP	104,501104,501	$25,708	—	TRIM -56%
12	GEODE CAPITAL MANAGEMENT, LLC	100,176100,176	$24,631	—	—
13	Graham Capital Management, L.P.	92,86992,869	$22,846	—	—
14	Ionic Capital Management LLC	91,62791,627	$22,540	—	ADD 51%
15	TORNO CAPITAL, LLC	75,00075,000	$18,450	—	ADD 200%
16	LMR Partners LLP	70,00070,000	$17,220	—	—
17	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	66,66666,666	$16,400	—	—
18	AQR CAPITAL MANAGEMENT LLC	65,02365,023	$15,996	—	—
19	Walleye Capital LLC	53,47053,470	$13,154	—	TRIM -92%
20	HRT FINANCIAL LP	53,63153,631	$13,000	—	NEW
21	Point72 Asset Management, L.P.	48,65748,657	$11,970	—	ADD 166%
22	IEQ CAPITAL, LLC	42,71842,718	$10,509	—	TRIM -56%
23	PEAK6 LLC	40,10240,102	$9,865	—	ADD 88%
24	CITADEL ADVISORS LLC	31,65031,650	$7,786	—	TRIM -77%
25	LPL Financial LLC	25,42425,424	$6,253	—	TRIM -51%
26	Balyasny Asset Management L.P.	23,96823,968	$5,944	—	—
27	Susquehanna Portfolio Strategies, LLC	23,75123,751	$5,843	—	—
28	Squarepoint Ops LLC	22,60522,605	$5,561	—	TRIM -21%
29	SUSQUEHANNA INTERNATIONAL GROUP, LLP	21,02221,022	$5,171	—	—
30	Legal & General Group Plc	19,03519,035	$4,721	—	NEW
31	Amundi	18,77018,770	$4,617	—	NEW
32	SIGNATUREFD, LLC	17,15817,158	$4,221	—	—
33	Tower Research Capital LLC (TRC)	15,70415,704	$3,884	—	ADD 50%
34	NWAM LLC	14,68314,683	$3,612	—	—
35	GROUP ONE TRADING LLC	13,71613,716	$3,374	—	TRIM -54%
36	JANUS HENDERSON GROUP PLC	13,23513,235	$3,282	—	—
37	Prentice Capital Management, LP	12,97012,970	$3,191	—	TRIM -50%
38	UBS Group AG	12,48812,488	$3,072	—	TRIM -62%
39	Universal- Beteiligungs- und Servicegesellschaft mbH	11,44011,440	$2,814	—	—
40	CAPSTONE INVESTMENT ADVISORS, LLC	10,43510,435	$2,567	—	NEW
41	WOLVERINE ASSET MANAGEMENT LLC	7,3927,392	$1,818	—	TRIM -60%
42	MIRABELLA FINANCIAL SERVICES LLP	55,17055,170	$1,722	—	NEW
43	KLP KAPITALFORVALTNING AS	6,2966,296	$1,549	—	—
44	INTACT INVESTMENT MANAGEMENT INC.	5,8145,814	$1,430	—	—
45	Qube Research & Technologies Ltd	5,3275,327	$1,310	—	—
46	EQUITEC PROPRIETARY MARKETS, LLC	5,0005,000	$1,230	—	TRIM -67%
47	AlphaCore Capital LLC	4,9734,973	$1,223	—	ADD 93%
48	Wilmington Savings Fund Society, FSB	4,6494,649	$1,153	—	ADD 4%
49	BlackRock, Inc.	4,4064,406	$1,084	—	TRIM -96%
50	Zurcher Kantonalbank (Zurich Cantonalbank)	4,3944,394	$1,081	—	—
51	BANK OF MONTREAL /CAN/	3,6773,677	$905	—	TRIM -25%
52	TWIN PEAKS WEALTH ADVISORS, LLC	2,6232,623	$645	—	NEW
53	OSAIC HOLDINGS, INC.	2,1392,139	$510	—	TRIM -19%
54	Activest Wealth Management	1,8331,833	$451	—	—
55	Marathon Trading Investment Management LLC	1,7731,773	$436	—	—
56	JONES FINANCIAL COMPANIES LLLP	1,4451,445	$410	—	TRIM -19%
57	BLAIR WILLIAM & CO/IL	1,6661,666	$410	—	TRIM -4%
58	INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC	1,5261,526	$372	—	—
59	Federation des caisses Desjardins du Quebec	1,4111,411	$347	—	—
60	ADVENT CAPITAL MANAGEMENT /DE/	1,1991,199	$295	—	—
61	BNP PARIBAS FINANCIAL MARKETS	1,1891,189	$292	—	—
62	SOROS FUND MANAGEMENT LLC	1,1021,102	$271	—	ADD 451%
63	WELLS FARGO & COMPANY/MN	969969	$239	—	ADD 4%
64	CWM, LLC	779779	$192	—	TRIM -5%
65	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	625625	$153	—	ADD 1589%
66	BARCLAYS PLC	541541	$133	—	TRIM -25%
67	Advisory Services Network, LLC	397397	$98	—	NEW
68	Meramec Financial Planners, LLC	173173	$68	—	—
69	DANSKE BANK A/S	192192	$47	—	TRIM -51%
70	Allworth Financial LP	147147	$37	—	—
71	Crewe Advisors LLC	150150	$37	—	—
72	MILLER WEALTH ADVISORS, LLC	135135	$33	—	—
73	Bogart Wealth, LLC	116116	$29	—	—
74	HARBOUR INVESTMENTS, INC.	113113	$28	—	ADD 242%
75	Synergy Investment Management, LLC	107107	$26	—	NEW
76	Resolute Advisors LLC	100100	$25	—	NEW
77	Nemes Rush Group LLC	8383	$20	—	—
78	Aspect Partners, LLC	8383	$20	—	NEW
79	Avalon Trust Co	7676	$19	—	—
80	FINANCIAL CONSULATE, INC	7171	$18	—	—
81	IFP Advisors, Inc	7575	$18	—	—
82	Inspire Investing, LLC	7272	$18	—	—
83	Center for Financial Planning, Inc.	6666	$17	—	—
84	Quent Capital, LLC	7070	$17	—	—
85	Farther Finance Advisors, LLC	7070	$17	—	TRIM -50%
86	TD Waterhouse Canada Inc.	6666	$16	—	ADD 5%
87	Gen-Wealth Partners Inc	6767	$16	—	NEW
88	Arax Advisory Partners	5959	$15	—	TRIM -29%
89	PNC FINANCIAL SERVICES GROUP, INC.	5353	$13	—	ADD 165%
90	US BANCORP \DE\	5050	$12	—	TRIM -73%
91	SouthState Bank Corp	4848	$12	—	—
92	Steward Partners Investment Advisory, LLC	4343	$11	—	TRIM -25%
93	AdvisorNet Financial, Inc	3939	$10	—	TRIM -95%
94	Parallel Advisors, LLC	3838	$9	—	TRIM -5%
95	Larson Financial Group LLC	3838	$9	—	—
96	WOLFF WIESE MAGANA LLC	3333	$9	—	—
97	True Wealth Design, LLC	3636	$9	—	—
98	Annis Gardner Whiting Capital Advisors, LLC	3333	$9	—	—
99	BROWN BROTHERS HARRIMAN & CO	3232	$8	—	—
100	Beaird Harris Wealth Management, LLC	2626	$7	—	TRIM -38%

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder	2024-Q4	2025-Q1	2025-Q2	2025-Q3	2025-Q4	2026-Q1	Latest value
Caption Management, LLC	—	—	—	—	2.3M	2.3M	$563,741
MORGAN STANLEY	—	—	—	—	896K	886K	$217,997
Lennar Corp /New/	—	—	—	—	626K	626K	$154,045
ARISTEIA CAPITAL, L.L.C.	—	—	—	—	560K	588K	$145,940
Kultura Capital Management LP	—	—	—	—	16K	16K	$135,891
Skaana Management L.P.	—	—	—	—	439K	469K	$115,390
JANE STREET GROUP, LLC	—	—	—	—	807K	442K	$108,759
Virtu Financial LLC	—	—	—	—	171K	262K	$64,000
KESTRA PRIVATE WEALTH SERVICES, LLC	—	—	—	—	52K	166K	$40,737
STATE STREET CORP	—	—	—	—	142K	142K	$34,811
Hudson Bay Capital Management LP	—	—	—	—	235K	105K	$25,708
GEODE CAPITAL MANAGEMENT, LLC	—	—	—	—	100K	100K	$24,631
Graham Capital Management, L.P.	—	—	—	—	93K	93K	$22,846
Ionic Capital Management LLC	—	—	—	—	61K	92K	$22,540
TORNO CAPITAL, LLC	—	—	—	—	25K	75K	$18,450

Institutional footprint by quarter

Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	128	7,235,023	—	$2M
2025-Q4	145	10,550,873	—	$5M
2025-Q3	1	3	—	$2

Short interest has its own tab now — open SI →

OPENL☆

Institutional ownership· 13F filers holding OPENL · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Institutional ownership· 13F filers holding OPENL · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

OPENL