Equibles

IBIO

iBio, Inc.

Company with tickers: IBIO

CIK
1420720
CUSIP
451033708
Shares Outstanding
49,678,561
13F Activity (30d)
48 filings 48 filers
Holders: 52
Total Value: $36,911,350
Total Shares: 19,427,041

Institutional Ownership Trend

12 quarters

Holder Concentration

Across 52 13F filers · Δ vs Dec 31, 2025
Top Holder
16.0%
Mar 2023 → Mar 2026 · range 13.6% – 59.7%
+2.4 pts
Top 5
48.9%
Mar 2023 → Mar 2026 · range 48.9% – 100.0%
−8.3 pts
Top 10
74.2%
Mar 2023 → Mar 2026 · range 74.2% – 100.0%
−5.1 pts
HHI
706
Mar 2023 → Mar 2026 · range 706 – 5,000
Broadly held −109

Quarterly Activity

vs Dec 31, 2025
New
16
Increased
16
Decreased
8
Sold Out
14
Unchanged
12
Holder count: +2
Institutional value: +17.0%
Shares held: +18.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid Affinity Asset Advisors, LLC +1,050,000 3,107,200
Large MARSHALL WACE, LLP +499,316 620,602
Large Walleye Capital LLC +190,179 388,554
Mega BANK OF AMERICA CORP /DE/ +174,620 290,413
Mega GEODE CAPITAL MANAGEMENT, LLC +164,957 387,567

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid Logos Global Management LP −700,000 1,300,000
Mid EcoR1 Capital, LLC −645,000 1,583,000
Mega UBS Group AG −124,383 2,173
Large Balyasny Asset Management L.P. −85,224 1,010,955
Mega TWO SIGMA INVESTMENTS, LP −47,475 408,858

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega MILLENNIUM MANAGEMENT LLC 1,549,850 $2,944,715
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,088,299 $2,067,768
Mega CITADEL ADVISORS LLC 956,429 $1,817,214
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP 412,725 $784,177
Mega VANGUARD FIDUCIARY TRUST CO 205,015 $389,528

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 883,149 $1,704,475
Mega AMERIPRISE FINANCIAL INC 584,368 $1,127,830
Large RENAISSANCE TECHNOLOGIES LLC 353,339 $681,944
Small Monashee Investment Management LLC 274,862 $530,483
Large Hudson Bay Capital Management LP 242,076 $467,206
Filter: New 16 Increased 16 Reduced 8 Sold out 14 Unchanged 12
Showing 52 of 52
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Affinity Asset Advisors, LLC $5,903,680 15.99% 3,107,200
Mid Frazier Life Sciences Management, L.P. $3,711,587 10.06% 1,953,467
Mid EcoR1 Capital, LLC $3,007,700 8.15% 1,583,000
Mega MILLENNIUM MANAGEMENT LLC $2,944,715 7.98% 1,549,850
Mid Logos Global Management LP $2,470,000 6.69% 1,300,000
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,067,768 5.60% 1,088,299
Large Balyasny Asset Management L.P. $1,920,814 5.20% 1,010,955
Mid Ikarian Capital, LLC $1,818,417 4.93% 957,062
Mega CITADEL ADVISORS LLC $1,817,214 4.92% 956,429
Small Sio Capital Management, LLC $1,718,109 4.65% 904,268
Large MARSHALL WACE, LLP $1,179,143 3.19% 620,602
Mid ADAR1 Capital Management, LLC $892,768 2.42% 469,878
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $784,177 2.12% 412,725
Mega TWO SIGMA INVESTMENTS, LP $776,830 2.10% 408,858
Large Walleye Capital LLC $738,252 2.00% 388,554
Mega GEODE CAPITAL MANAGEMENT, LLC $736,376 1.99% 387,567
Small NOESIS CAPITAL MANGEMENT CORP $591,850 1.60% 311,500
Mega BANK OF AMERICA CORP /DE/ Bank $551,784 1.49% 290,413
Mid BOOTHBAY FUND MANAGEMENT, LLC $483,382 1.31% 254,412
Small SILVERARC CAPITAL MANAGEMENT, LLC $429,400 1.16% 226,000
Mega VANGUARD FIDUCIARY TRUST CO Bank $389,528 1.06% 205,015
Mega GOLDMAN SACHS GROUP INC $380,402 1.03% 200,212
Small DAFNA Capital Management LLC $367,912 1.00% 193,638
Mega STATE STREET CORP $268,278 0.73% 141,199
Mega BlackRock, Inc. $249,308 0.68% 131,215
Mega NORTHERN TRUST CORP Bank $146,915 0.40% 77,324
Small Lynx1 Capital Management LP $129,344 0.35% 68,076
Mid XTX Topco Ltd $118,656 0.32% 62,451
Micro Verdad Advisers, LP $107,004 0.29% 56,318
Mega MORGAN STANLEY $58,778 0.16% 30,937
Mid PFG Investments, LLC $38,000 0.10% 20,000
Mid Vanguard Personalized Indexing Management, LLC $23,142 0.06% 12,180
Small Scientech Research LLC $21,663 0.06% 11,402
Small Headlands Technologies LLC $20,805 0.06% 10,950
Mid Virtu Financial LLC $20,561 0.06% 10,822
Mega Vanguard Global Advisers, LLC $10,374 0.03% 5,460
Mega ROYAL BANK OF CANADA Bank $7,392 0.02% 3,891
Mega UBS Group AG $4,127 0.01% 2,173
Mega CITIGROUP INC $2,608 0.01% 1,373
Micro Fortitude Family Office, LLC Family Office $1,212 0.00% 638
Large OSAIC HOLDINGS, INC. $1,109 0.00% 584
Small SHP Wealth Management $114 0.00% 60
Mid Hillsdale Investment Management Inc. $60 0.00% 32
Mid SBI Securities Co., Ltd. Broker-Dealer $41 0.00% 22
Small SOA Wealth Advisors, LLC. $24 0.00% 13
Mega BNP PARIBAS ARBITRAGE, SA $9 0.00% 5
Small Activest Wealth Management $7 0.00% 4
Mega JPMORGAN CHASE & CO $3 0.00% 2
Small Caitong International Asset Management Co., Ltd $3 0.00% 2
Small Financial Gravity Asset Management, Inc. $3 0.00% 2
Large Steward Partners Investment Advisory, LLC $1 0.00% 1
Mega WELLS FARGO & COMPANY/MN $1 0.00% 1

Report a Problem

Category
Description
Email (optional, for follow-up)