MYSE · Myseum.AI, Inc. · Holdings

$1.48 +0.02 (+1.37%) At close · Oct 20

Market Cap

$7.59M

5.20M

Volume · Oct 20 11.48K Avg daily vol (3M) 94.84K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of MYSE: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 12

Total Value: $493,339

Total Shares: 195,830

Institutional Ownership Trend

13 quarters

Holder Concentration

Across 12 13F filers

Top Holder

52.5%

of institutional value

Top 5

97.1%

of institutional value

Top 10

100.0%

of institutional value

HHI

3,434

Highly concentrated

Who Holds MYSE

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 12 filers, like-for-like change -8.8%; actively managed books +147.9%; index-like books -50.7%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	35.4%	5	-58.8%	0	2
Bank	1.9%	1	+6896.2%	0	1
Non-US	0.0%	1	-37.2%	0	0
Holding company	1.9%	1	+0.1%	0	0
Broker-dealer	0.0%	0	—	0	0
Unknown	60.7%	4	+178.5%	2	4

Style	Share	Filers	Change	New	Exited
Index-like	42.7%	3	-50.7%	0	0
Systematic-like	0.6%	1	-95.6%	0	2
Diversified active	56.7%	8	+532.4%	2	4
Concentrated	0.0%	0	-100.0%	0	1
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	20.6%	7	-71.2%	1	5
Medium turnover	1.9%	1	+28423.1%	0	0
High turnover	53.1%	2	+282.1%	1	2
Unknown	24.5%	2	0.0%	0	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	24.5%	2	-26.4%	0	1
Medium horizon	0.0%	1	-37.2%	0	0
Long horizon	75.5%	9	+4.8%	2	5
Unknown	0.0%	0	-100.0%	0	1
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
$1B to $10B	0.8%	4	-92.0%	0	1
$10B to $100B	2.1%	2	-74.2%	0	1
$100B or more	97.1%	6	+11.7%	2	3
Under $1B	0.0%	0	-100.0%	0	2
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.3%	3	-95.2%	0	2
Registered funds and BDCs	35.1%	2	-55.6%	0	0
Pooled investment vehicles	0.0%	0	—	0	0
Unknown	64.6%	7	+171.0%	2	5

Private funds	Share	Filers	Change	New	Exited
No private funds	35.4%	5	-58.6%	0	1
Hedge funds	0.0%	0	-100.0%	0	1
Other private funds	0.0%	0	—	0	0
Unknown	64.6%	7	+171.0%	2	5

Location	Share	Filers	Change	New	Exited
United States	98.1%	10	-2.7%	2	5
Outside the US	1.9%	2	-78.2%	0	2

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

12 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

2.05%

of shares outstanding, 8th percentile

Mar 31, 2026: 0.648%

Private-fund advisers

0.000%

of shares outstanding

Institutional ownership

3.86%

4.01% of the estimated free float

Top 10 holders

100.0%

of 13F shares, Herfindahl 0.343

Active holders

+147.9%

like-for-like share change of active filers

5% stakes on record

0 13D, 0 13G

How long holders have held it value-weighted 3.7 quarters

Under 1 year 76.9% 1 to 3 years 2.13% 3 years or more 20.9% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$2.06

estimated per share

Mar 31, 2026: $2.31

Quarter-end price

$2.52

implied by 13F values

Estimated gain or loss

+22.2%

price against the estimated cost

Estimated at a loss

0.375%

of costed 13F value

Estimated cost covers 54.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shareholder Targets

13F filers that own its peers but not MYSE, quarter ended Jun 30, 2026

MYSE has no holder-overlap peers, so these filers hold the largest Technology stocks: NVDA, AAPL, MSFT, AVGO, MU, AMD, INTC, AMAT, LRCX, APH, CSCO, TSM, KLAC, SNDK, TXN, PANW, MRVL, WDC, ORCL, STX. 7,107 filers in all.

#	Filer	In peers	Of book	Largest peers
1	BlackRock, Inc. Holding company, Index-like	$1,767,301,775,232 20 held	27.1%	NVDA, AAPL, MSFT
2	STATE STREET CORP Bank, Index-like	$904,236,503,754 20 held	26.7%	NVDA, AAPL, MSFT
3	FMR LLC Holding company, Diversified active	$649,212,341,065 20 held	28.8%	NVDA, AAPL, MSFT
4	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$496,018,546,412 20 held	22.3%	NVDA, AAPL, MSFT
5	Invesco Ltd. Adviser, Diversified active	$415,287,497,491 20 held	32.9%	NVDA, AAPL, MU
6	JPMORGAN CHASE & CO Bank, Diversified active	$414,619,051,186 20 held	25.2%	NVDA, AAPL, MSFT
7	MORGAN STANLEY Holding company, Index-like	$346,768,521,955 20 held	20.1%	NVDA, AAPL, MSFT
8	NORGES BANK Non-US, Index-like	$284,292,348,862 20 held	28.3%	NVDA, AAPL, MSFT
9	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$281,893,738,869 20 held	28.5%	NVDA, AAPL, MSFT
10	NORTHERN TRUST CORP Bank, Index-like	$219,960,139,232 20 held	26.5%	NVDA, AAPL, MSFT

Fund Ownership of MYSE by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 1.49% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.86%	+0.17 pp	44,638	4
Index ETFs	0.63%	0.00 pp	32,906	1
Active ETFs	0.06%	-0.07 pp	3,061	1
Active funds	0.00%	0.00 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	1.55%	+0.10 pp	80,605	6

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 5 Bank 1 Non-US 1 Holding company 1 Unknown 4

Showing 12 of 12

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

JANE STREET GROUP, LLC

$258,894

52.48%

102,736

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	77,226	$194,609	75.2%	Defined
Jane Street Global Trading, LLC	25,510	$64,285	24.8%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$90,107

18.26%

35,757

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	2,689	$6,776	7.5%	Defined
Held directly	33,068	$83,331	92.5%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$82,923

16.81%

32,906

VANGUARD FIDUCIARY TRUST CO

$37,784

7.66%

14,994

OSAIC HOLDINGS, INC.

$9,593

1.94%

3,807

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	3,807	$9,593	100.0%	Defined

UBS Group AG

$9,342

1.89%

3,708

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	13	$32	0.3%	Defined
UBS AG	123	$309	3.3%	Defined
UBS Securities LLC	3,572	$9,001	96.3%	Defined

Tower Research Capital LLC (TRC)

$3,024

0.61%

1,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,200	$3,024	100.0%	Defined

ASSETMARK, INC

$1,008

0.20%

400

IFP Advisors, Inc

$358

0.07%

200

SBI Securities Co., Ltd.

$178

0.04%

HARBOUR INVESTMENTS, INC.

$126

0.03%

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

0.00%

Key facts CIK 1648960 CUSIP 23816M206 13F (30d) 1 filings 1 filers Visit website Investor relations