Akebia Therapeutics, Inc. (AKBA) Ownership
AKBA ownership summary
as of October 18, 2026- Institutions
- 40.8% of shares outstanding
- Insiders
- 1.98% of shares outstanding
- Shares outstanding
- 277.1M
- Float
- 272.3M shares available to trade
- Short interest
- 8.23% 22.5M shares short
- Days to cover
- 3.07 short interest up 9.6% vs prior month
- Institutions 40.76%
- Insiders 1.98%
- Other investors 57.26%
AKBA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.21% | 20.0M | $13.4M | +1.3M (+6.9%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 4.09% | 11.3M | $7.6M | +155,433 (+1.4%) | June 30, 2026 |
| 3 | AQR Capital Management LLC | 3.30% | 9.2M | $6.1M | +7.4M (+410.5%) | June 30, 2026 |
| 4 | Geode Capital Management, LLC | 2.43% | 6.7M | $4.5M | +275,050 (+4.3%) | June 30, 2026 |
| 5 | State Street Corp | 1.95% | 5.4M | $3.6M | −6.2M (−53.6%) | June 30, 2026 |
| 6 | Jacobs Levy Equity Management, Inc. | 1.54% | 4.3M | $2.9M | +3.8M (+894.5%) | June 30, 2026 |
| 7 | Acadian Asset Management LLC | 1.45% | 4.0M | $2.7M | +2.6M (+190.8%) | June 30, 2026 |
| 8 | Nantahala Capital Management, LLC | 1.44% | 4.0M | $2.7M | +2.0M (+100.0%) | June 30, 2026 |
| 9 | The Goldman Sachs Group Inc | 1.33% | 3.7M | $2.5M | +86,340 (+2.4%) | June 30, 2026 |
| 10 | Millennium Management LLC | 1.15% | 3.2M | $2.1M | +811,892 (+34.0%) | June 30, 2026 |
| 11 | Vanguard Portfolio Management, LLC | 0.91% | 2.5M | $1.7M | +318,536 (+14.4%) | June 30, 2026 |
| 12 | Two Sigma Investments LLC | 0.88% | 2.4M | $1.6M | +1.1M (+87.8%) | June 30, 2026 |
| 13 | Charles Schwab Investment Management Inc | 0.83% | 2.3M | $1.5M | +284,861 (+14.1%) | June 30, 2026 |
| 14 | Northern Trust Corp | 0.78% | 2.2M | $1.4M | +214,779 (+11.0%) | June 30, 2026 |
| 15 | Vanguard Fiduciary Trust Co | 0.69% | 1.9M | $1.3M | +129,496 (+7.3%) | June 30, 2026 |
| 16 | FMR Inc | 0.68% | 1.9M | $1.3M | +535,731 (+40.1%) | June 30, 2026 |
| 17 | Qube Research & Technologies | 0.64% | 1.8M | $1.2M | −615,508 (−25.7%) | June 30, 2026 |
| 18 | Citadel Advisors Llc | 0.62% | 1.7M | $1.2M | +327,592 (+23.6%) | June 30, 2026 |
| 19 | UBS Group AG | 0.50% | 1.4M | $921,216 | +605,479 (+78.7%) | June 30, 2026 |
| 20 | Renaissance Technologies Corp | 0.44% | 1.2M | $820,055 | −609,165 (−33.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 17 holders added 22.0M shares and 3 cut 7.4M.
AKBA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.86% | 7.9M | $5.3M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.46% | 6.8M | $4.6M | −78,656 (−1.1%) | September 30, 2026 |
| 3 | Foord Global Equity (Lux) A | 1.37% | 3.8M | $2.5M | +1.8M (+93.4%) | June 30, 2026 |
| 4 | Fidelity Small Cap Index | 1.01% | 2.8M | $1.9M | +10,347 (+0.4%) | July 31, 2026 |
| 5 | iShares Russell 2000 Growth ETF | 0.73% | 2.0M | $1.4M | −2,575 (−0.1%) | September 30, 2026 |
| 6 | Fidelity Enhanced Small Cap Core ETF | 0.70% | 2.0M | $1.3M | +4,095 (+0.2%) | September 30, 2026 |
| 7 | Foord Global Equity Class B | 0.66% | 1.8M | $1.2M | +1.8M (0.0%) | March 31, 2026 |
| 8 | Vanguard Russell 2000 ETF | 0.54% | 1.5M | $1.0M | +22,446 (+1.5%) | September 30, 2026 |
| 9 | Schwab US Small-Cap ETF™ | 0.52% | 1.4M | $963,946 | +972 (+0.1%) | September 30, 2026 |
| 10 | iShares Micro-Cap ETF | 0.29% | 817K | $547,332 | −5,634 (−0.7%) | September 30, 2026 |
| 11 | Vanguard Health Care ETF | 0.28% | 765K | $512,247 | +842 (+0.1%) | September 30, 2026 |
| 12 | Schwab Small Cap Index | 0.23% | 632K | $423,325 | — | August 31, 2026 |
| 13 | iShares U.S. Small-Cap Eq Fac ETF | 0.22% | 607K | $406,890 | — | September 30, 2026 |
| 14 | Multi-Manager Small Cap Eq Strat Inst | 0.21% | 588K | $394,004 | — | September 30, 2026 |
| 15 | AQR Small Cap Multi-Style I | 0.20% | 567K | $379,593 | +475,668 (+523.4%) | June 30, 2026 |
| 16 | Fidelity Extended Market Index | 0.20% | 566K | $379,254 | −459,182 (−44.8%) | August 31, 2026 |
| 17 | Nordea 2 - BetaPlus Enh GlSCap Eq BI USD | 0.19% | 530K | $355,111 | +530,017 (0.0%) | January 31, 2026 |
| 18 | iShares Russell 2000 Small-Cap Idx Instl | 0.18% | 507K | $339,978 | — | August 31, 2026 |
| 19 | Fidelity Total Market Index | 0.18% | 507K | $339,809 | — | August 31, 2026 |
| 20 | Goldman Sachs ActiveBeta® US SmCp Eq ETF | 0.17% | 457K | $306,343 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
AKBA insider transactions
latest 5| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-04 | John P Butler | Buy | $1.25 | 69,270 | $86,588 |
| 2026-02-02 | Richard C Malabre | Sell | $1.39 | 49,524 | $68,838 |
| 2025-06-30 | Erik Ostrowski | Sell | $3.67 | 41,314 | $151,622 |
| 2025-06-09 | Richard C Malabre | Sell | $4.01 | 15,000 | $60,150 |
| 2025-06-04 | Richard C Malabre | Sell | $3.53 | 13,334 | $47,069 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AKBA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AKBA
Institutional investors own 40.8% of Akebia Therapeutics's shares and insiders 1.98%. The largest holder is BlackRock Inc with 7.21% of the shares (20.0M), as of June 30, 2026. Among the top 20 institutions, 17 added shares and 3 reduced their stake in the latest filings. Short interest is 8.23% of the float, or 3.07 days of average trading volume. The share count rose 1,224.9% since 2014.
Related: AKBA analyst forecast, AKBA key metrics. See the AKBA stock overview for the latest quote and news.
AKBA ownership FAQ
Who owns the most Akebia Therapeutics stock?
The largest shareholders of Akebia Therapeutics are BlackRock Inc (7.21%), Vanguard Capital Management, LLC (4.09%), AQR Capital Management LLC (3.30%), Geode Capital Management, LLC (2.43%), State Street Corp (1.95%).
What percentage of Akebia Therapeutics is owned by institutions?
Institutions hold 40.8% of Akebia Therapeutics's shares outstanding; insiders hold 1.98%.
Which funds own Akebia Therapeutics?
The largest fund holders of Akebia Therapeutics are Vanguard MStar Total Stk Mkt Idx Invest (2.86%), iShares Russell 2000 ETF (2.46%), Foord Global Equity (Lux) A (1.37%), Fidelity Small Cap Index (1.01%), iShares Russell 2000 Growth ETF (0.73%).
What is Akebia Therapeutics's short interest?
22.5M shares of Akebia Therapeutics were sold short, 8.23% of the float; at the average daily volume it would take 3.07 days to cover.
Are insiders buying or selling Akebia Therapeutics?
Of the latest 5 reported insider transactions in Akebia Therapeutics (since June 4, 2025), 1 were purchases and 4 were sales.
How many shares of Akebia Therapeutics are outstanding?
Akebia Therapeutics has 277.1M shares outstanding, of which 272.3M are in the public float.