PHIO · Phio Pharmaceuticals Corp. · Holdings

$0.89 +0.02 (+2.67%) At close · Oct 20

Market Cap

$10.09M

11.62M

Volume · Oct 20 60.64K Avg daily vol (3M) 140.98K

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 PHIO: 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: 24

Total Value: $663,294

Total Shares: 647,127

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 24 13F filers

Top Holder

18.2%

of institutional value

Top 5

65.5%

of institutional value

Top 10

89.2%

of institutional value

HHI

1,112

Broadly held

Who Holds PHIO

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: 24 filers, like-for-like change -3.2%; actively managed books -1.9%; index-like books -4.8%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	53.9%	10	+3.4%	2	2
Adviser	7.7%	1	new	1	0
Bank	7.0%	4	-13.1%	1	0
Non-US	0.2%	1	+1.9%	0	0
Holding company	1.2%	2	0.0%	0	0
Unknown	29.9%	6	-28.2%	0	2

Style	Share	Filers	Change	New	Exited
Index-like	43.4%	5	-4.8%	0	0
Systematic-like	14.4%	4	-6.7%	1	2
Concentrated	0.0%	1	0.0%	0	0
Diversified active	42.2%	14	-0.1%	3	2
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	32.3%	9	-11.5%	0	1
Medium turnover	4.8%	5	+4.0%	2	0
High turnover	34.7%	7	-21.0%	1	3
Unknown	28.2%	3	+54.6%	1	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	31.0%	5	+4.2%	1	2
Medium horizon	0.2%	1	-45.7%	0	1
Long horizon	63.4%	16	+4.9%	3	0
Unknown	5.4%	2	-57.9%	0	1
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	0.0%	2	-100.0%	0	1
$1B to $10B	6.2%	5	-44.5%	1	3
$10B to $100B	19.0%	6	+33.7%	1	0
$100B or more	74.9%	11	+2.0%	2	0
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	7.7%	4	+2.9%	0	1
Pooled investment vehicles	10.6%	2	+31.1%	1	1
Registered funds and BDCs	34.1%	3	-2.8%	1	0
Pension and profit sharing plans	1.5%	1	0.0%	0	0
Unknown	46.1%	14	-9.9%	2	2

Private funds	Share	Filers	Change	New	Exited
Hedge funds	10.6%	2	+31.1%	1	1
Other private funds	3.4%	2	+120.0%	1	0
No private funds	39.9%	6	-6.1%	0	1
Unknown	46.1%	14	-9.9%	2	2

Location	Share	Filers	Change	New	Exited
United States	96.1%	19	+4.4%	3	3
Outside the US	3.9%	5	-65.3%	1	1

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

24 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

2.12%

of shares outstanding, 8th percentile

Mar 31, 2026: 2.53%

Private-fund advisers

0.780%

of shares outstanding

Institutional ownership

5.57%

5.94% of the estimated free float

Top 10 holders

89.2%

of 13F shares, Herfindahl 0.111

Active holders

-1.9%

like-for-like share change of active filers

5% stakes on record

0 13D, 2 13G (0 institutional, 2 passive, 0 exempt)

How long holders have held it value-weighted 3.1 quarters

Under 1 year 73.0% 1 to 3 years 27.0% 3 years or more 0.000% 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

$1.36

estimated per share

Mar 31, 2026: $1.38

Quarter-end price

$1.02

implied by 13F values

Estimated gain or loss

-24.8%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 79.3% 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 PHIO, quarter ended Jun 30, 2026

PHIO has no holder-overlap peers, so these filers hold the largest Healthcare stocks: LLY, JNJ, ABBV, UNH, MRK, TMO, AMGN, AZN, GILD, ABT, ISRG, VRTX, CVS, DHR, SYK, BMY, PFE, MDT, MCK, ELV. 6,266 filers in all.

#	Filer	In peers	Of book	Largest peers
1	BlackRock, Inc. Holding company, Index-like	$399,992,110,610 20 held	6.12%	LLY, JNJ, ABBV
2	STATE STREET CORP Bank, Index-like	$222,713,276,889 20 held	6.58%	LLY, JNJ, ABBV
3	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$116,012,260,024 20 held	5.22%	LLY, JNJ, ABBV
4	LILLY ENDOWMENT INC Unknown, Unknown	$108,400,867,760 1 held	100.0%	LLY
5	FMR LLC Holding company, Diversified active	$102,008,860,554 20 held	4.52%	LLY, UNH, GILD
6	JPMORGAN CHASE & CO Bank, Diversified active	$92,751,126,760 20 held	5.64%	LLY, JNJ, ABBV
7	Capital World Investors Adviser, Diversified active	$89,827,396,720 14 held	10.6%	LLY, VRTX, UNH
8	NORGES BANK Non-US, Index-like	$70,478,623,091 20 held	7.00%	LLY, JNJ, ABBV
9	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$69,817,479,779 20 held	7.05%	LLY, UNH, JNJ
10	PNC FINANCIAL SERVICES GROUP, INC. Bank, Concentrated	$67,493,367,200 20 held	42.0%	LLY, JNJ, ABBV

Fund Ownership of PHIO by Fund Type

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

Index funds and index ETFs hold 1.75% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.93%	+0.25 pp	108,548	3
Index ETFs	0.81%	+0.12 pp	94,262	1
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.53%	+0.10 pp	62,004	3
Unclassified	0.00%	0.00 pp	0	0
All registered funds	2.28%	+0.48 pp	264,814	7

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 10 Adviser 1 Bank 4 Non-US 1 Holding company 2 Unknown 6

Showing 24 of 24

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

JANE STREET GROUP, LLC

$120,698

18.20%

117,755

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	106,028	$108,678	90.0%	Defined
Jane Street Global Trading, LLC	11,727	$12,020	10.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$117,437

17.71%

114,574

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	25,153	$25,781	22.0%	Defined
Held directly	89,421	$91,656	78.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$96,618

14.57%

94,262

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$51,250

7.73%

50,000

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

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	50,000	$51,250	100.0%	Defined

Cetera Investment Advisers

$48,687

7.34%

47,500

CITADEL ADVISORS LLC

$48,328

7.29%

47,150

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

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	47,150	$48,328	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$39,123

5.90%

38,169

NORTHERN TRUST CORP

$28,461

4.29%

27,768

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

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	27,768	$28,461	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$22,038

3.32%

21,501

XTX Topco Ltd

$18,936

2.85%

18,475

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

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	18,475	$18,936	100.0%	Defined

HRT FINANCIAL LP

$13,511

2.04%

13,182

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$12,300

1.85%

12,000

CITIGROUP INC

$11,895

1.79%

11,605

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

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	11,605	$11,895	100.0%	Defined

CAPTRUST FINANCIAL ADVISORS

$10,250

1.55%

10,000

Tower Research Capital LLC (TRC)

$6,361

0.96%

6,206

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)	6,206	$6,361	100.0%	Defined

MORGAN STANLEY

$6,150

0.93%

6,000

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	6,000	$6,150	100.0%	Defined

UBS Group AG

$5,521

0.83%

5,387

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	5,387	$5,521	100.0%	Defined

OSAIC HOLDINGS, INC.

$2,050

0.31%

2,000

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

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	2,000	$2,050	100.0%	Defined

Spire Wealth Management

$2,039

0.31%

1,990

SBI Securities Co., Ltd.

$1,278

0.19%

1,247

BARCLAYS PLC

$236

0.04%

231

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	231	$236	100.0%	Defined

ASSETMARK, INC

$112

0.02%

110

Activest Wealth Management

0.00%

Caitong International Asset Management Co., Ltd

0.00%

Key facts CIK 1533040 CUSIP 71880W501 13F (30d) 1 filings 1 filers Visit website Investor relations