Phio Pharmaceuticals Corp. Institutional Ownership | PHIO

Institutions by Trading Activity

11,617,250Shares Outstanding

668,490Shares held by institutions

$701,914Value of institutional holdings

5.75%Institutional ownership %

235.52%Shares Changed QoQ

24No. of institutional investors

Phio Pharmaceuticals Corp. (NASDAQ:PHIO) has 24 institutional investors with active 13F positions as of March 2026.

Collectively, these holders controlled 5.8% of Phio Pharmaceuticals's outstanding shares in March 2026, down from 6.1% in December 2025.
They increased total shares held in PHIO by 235.52% quarter over quarter, and investors in Phio Pharmaceuticals increased 100.0% from a year ago.
Of these 24 funds, 19 grew their exposure to Phio Pharmaceuticals, 0 cut back, and 5 maintained positions.
Institutional investors collectively held 668.49K shares in Phio Pharmaceuticals as of March 2026, up by 469.25K shares quarter on quarter, and up 567.86K shares year over year.
GEODE CAPITAL MANAGEMENT, LLC leads ownership in PHIO with 147.25K shares as of March 31, 2026, equal to 1.27% of outstanding shares.
Top purchasers of PHIO stock for the quarter ending March 2026 included JANE STREET GROUP, LLC (119.19K), VANGUARD CAPITAL MANAGEMENT LLC (79.85K), GEODE CAPITAL MANAGEMENT, LLC (54.62K), VANGUARD FIDUCIARY TRUST CO (38.17K), HRT FINANCIAL LP (34.73K).
Phio Pharmaceuticals's 10 largest shareholders as of March 2026 include GEODE CAPITAL MANAGEMENT, LLC (147.25K), JANE STREET GROUP, LLC (119.19K), VANGUARD CAPITAL MANAGEMENT LLC (79.85K), Cetera Investment Advisers (45.0K), VANGUARD FIDUCIARY TRUST CO (38.17K), HRT FINANCIAL LP (34.73K), TWO SIGMA INVESTMENTS, LP (32.49K), Scientech Research LLC (30.03K), UBS Group AG (26.99K), XTX Topco Ltd (24.87K) per Business Quant data.

668,490 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
GEODE CAPITAL MANAGEMENT, LLC	31 Mar, 2026	147,254	54,616	58.96%	$179,649.00
JANE STREET GROUP, LLC	31 Mar, 2026	119,189	119,189	0.00%	$145,410.00
VANGUARD CAPITAL MANAGEMENT LLC	31 Mar, 2026	79,853	79,853	0.00%	$97,421.00
Cetera Investment Advisers	31 Mar, 2026	45,000	2,500	5.88%	$54,900.00
VANGUARD FIDUCIARY TRUST CO	31 Mar, 2026	38,169	38,169	0.00%	$46,566.00
HRT FINANCIAL LP	31 Mar, 2026	34,732	34,732	0.00%	$42.00
TWO SIGMA INVESTMENTS, LP	31 Mar, 2026	32,495	18,001	124.20%	$39,644.00
Scientech Research LLC	31 Mar, 2026	30,032	30,032	0.00%	$36,639.00
UBS Group AG	31 Mar, 2026	26,987	18,393	214.02%	$32,925.00
XTX Topco Ltd	31 Mar, 2026	24,868	24,868	0.00%	$30,339.00
Northern Trust Corp	31 Mar, 2026	23,758	0	0.00%	$28,985.00
GSA CAPITAL PARTNERS LLP	31 Mar, 2026	19,864	19,864	0.00%	$24.00
TWO SIGMA SECURITIES, LLC	31 Mar, 2026	15,224	15,224	0.00%	$18,573.00
CAPTRUST FINANCIAL ADVISORS	31 Mar, 2026	10,000	0	0.00%	$12,200.00
Tower Research Capital LLC (TRC)	31 Mar, 2026	7,620	7,620	0.00%	$9,296.00
Morgan Stanley	31 Mar, 2026	6,000	0	0.00%	$7,320.00
Spire Wealth Management	31 Mar, 2026	2,000	2,000	0.00%	$2,440.00
OSAIC HOLDINGS, INC.	31 Mar, 2026	2,000	2,000	0.00%	$2,440.00
SBI Securities Co., Ltd.	31 Mar, 2026	1,224	89	7.84%	$1,493.00
NBC SECURITIES, INC.	31 Mar, 2026	1,074	1,074	0.00%	$1,310.00

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