Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in AKBA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 20.0M | $22.8M | +6.9% | 7.450% | 0.00% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 11.3M | $12.9M | +1.4% | 4.221% | 0.00% |
| 3 | AQR CAPITAL MANAGEMENT LLC | 9.2M | $10.4M | +410.5% | 3.411% | 0.00% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 6.7M | $7.7M | +4.3% | 2.508% | 0.00% |
| 5 | STATE STREET CORP | 5.4M | $6.1M | -53.6% | 2.010% | 0.00% |
| 6 | JACOBS LEVY EQUITY MANAGEMENT, INC | 4.3M | $4.9M | +894.5% | 1.593% | 0.02% |
| 7 | GOLDMAN SACHS GROUP INC | 3.7M | $4.2M | +2.4% | 1.375% | 0.00% |
| 8 | MILLENNIUM MANAGEMENT LLC | 3.2M | $3.6M | +34.1% | 1.192% | 0.00% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.5M | $2.9M | +14.4% | 0.945% | 0.00% |
| 10 | TWO SIGMA INVESTMENTS, LP | 2.4M | $2.8M | +87.8% | 0.908% | 0.00% |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.3M | $2.6M | +14.1% | 0.857% | 0.00% |
| 12 | NORTHERN TRUST CORP | 2.2M | $2.5M | +11.0% | 0.805% | 0.00% |
| 13 | Nantahala Capital Management, LLC | 2.0M | $2.3M | 0.0% | 0.746% | 0.04% |
| 14 | CITADEL ADVISORS LLC | 2.0M | $2.3M | +14.8% | 0.739% | 0.00% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 1.9M | $2.2M | +7.3% | 0.712% | 0.00% |
| 16 | FMR LLC | 1.9M | $2.1M | +40.1% | 0.698% | 0.00% |
| 17 | Qube Research & Technologies Ltd | 1.8M | $2.0M | -25.7% | 0.663% | 0.00% |
| 18 | UBS Group AG | 1.4M | $1.6M | +77.3% | 0.513% | 0.00% |
| 19 | RENAISSANCE TECHNOLOGIES LLC | 1.2M | $1.4M | -33.2% | 0.456% | 0.00% |
| 20 | CITIGROUP INC | 1.1M | $1.3M | -60.6% | 0.419% | 0.00% |
| 21 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.1M | $1.3M | -0.3% | 0.411% | 0.00% |
| 22 | RAFFA WEALTH MANAGEMENT, LLC | 64 | $920K | — | 0.000% | 0.00% |
| 23 | MORGAN STANLEY | 702K | $800K | +20.7% | 0.262% | 0.00% |
| 24 | Invesco Ltd. | 695K | $792K | -3.5% | 0.259% | 0.00% |
| 25 | MANGROVE PARTNERS IM, LLC | 667K | $760K | +77.4% | 0.249% | 0.05% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AKBA — a direct measure of their conviction.
Filings activity in AKBA during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new AKBA position in Q2 2026
Institutions that fully closed their AKBA position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 170 | +0.6% | 40.24% | +1.70 pp | $119M | 14% |
| Q1 2026 | 169 | +1.2% | 38.54% | 6.79 pp | $138M | 37% |
| Q4 2025 | 167 | 3.5% | 45.33% | 2.09 pp | $218M | 34% |
| Q3 2025 | 173 | +9.5% | 47.42% | +5.58 pp | $331M | 14% |
| Q2 2025 | 158 | +9.7% | 41.84% | +6.27 pp | $384M | +97% |
| Q1 2025 | 144 | +19% | 35.57% | +5.59 pp | $195M | +56% |
| Q4 2024 | 121 | +7.1% | 29.98% | +1.46 pp | $125M | +61% |
| Q3 2024 | 113 | — | 28.52% | — | $78M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AKBA stock.
Based on Q2 2026 13F filings, institutional ownership of Akebia Therapeutics, Inc. stands at 40.2%, held across 170 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of AKBA, with approximately 19,986,374 shares worth $0.02B as of Q2 2026.
Yes — 5 widely-followed marquee investors appear among the top 25 institutional holders of AKBA, including MILLENNIUM MANAGEMENT LLC, TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, RENAISSANCE TECHNOLOGIES LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for AKBA is 77 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
35 institutions opened new positions in AKBA during Q2 2026, while 34 fully exited. 44 added to existing positions and 87 trimmed.
AKBA institutional ownership rose by 1.70 percentage points quarter-over-quarter, with a net change of +1 holders.
The top 10 institutions account for 65.9% of all reported 13F value in AKBA, and the top 25 account for 86.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Akebia Therapeutics, Inc. (AKBA) Institutional Ownership