Latest Period
Q2 2026
Security Snapshot
ARDELYX, INC. - Common Stock, $0.001 par value per share (ARDX) Institutional Ownership
CUSIP: 039697107
13F Institutional Holders and Ownership History from Q2 2014 to Q2 2026
Institutions Reporting
247
Shares (Excl. Options)
177,440,250
Price
$5.10
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- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Symbol
- ARDX on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 177,440,250
- Total 13F value
- $906,354,056
- Portfolio coverage rank
- 0%
- Share change
- +10,920,907
- Value change
- +$50,435,976
- Number of holders
- 247
- Shares outstanding
- 246,992,378
- SEC-reported price per share
- $5.09
- Insider filing price
- $5.09
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ARDX - ARDELYX, INC. - Common Stock, $0.001 par value per share is tracked under CUSIP 039697107.
- 247 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 241 to 247 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $1,014,410,696 to $906,354,056.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 247 institutions filings for Q2 2026.
Security key
039697107
Latest holder period
Q2 2026
13F holders
247
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
ARDX full holder history
ARDELYX, INC. SEC filings
ARDELYX, INC. company facts
ARDELYX, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 039697107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
ARDX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Rubric Capital Management LP | 6.6% | $83,605,932 | 16,202,700 | Rubric Capital Management LP | 30 Jun 2026 | |||
| INTEGRATED CORE STRATEGIES (US) LLC | 5.7% | -24% | $73,275,989 | -$19,830,897 | 14,200,773 | -21% | Millennium Management LLC | 30 Jun 2026 |
| STATE STREET CORP | 5.5% | +12% | $83,122,316 | +$12,289,611 | 13,604,307 | +17% | STATE STREET CORPORATION | 31 Mar 2026 |
| JANUS HENDERSON GROUP PLC | 3.4% | -38% | $51,148,240 | -$33,316,968 | 8,371,234 | -39% | JANUS HENDERSON GROUP PLC | 31 Mar 2026 |
| MILLENNIUM MANAGEMENT LLC | 3.2% | -38% | $42,272,648 | -$24,398,060 | 7,671,987 | -37% | Millennium Management LLC | 30 Sep 2025 |
As of 30 Jun 2026, 247 institutional investors reported holding 177,440,250 shares of ARDELYX, INC. - Common Stock, $0.001 par value per share (ARDX). This represents 72% of the company’s total 246,992,378 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
59%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.5% | 23,504,630 | +11% | 0% | $119,873,615 |
| Rubric Capital Management LP | 6.6% | 16,202,700 | +771% | 0.76% | $82,633,770 |
| MILLENNIUM MANAGEMENT LLC | 5.6% | 13,900,773 | -22% | 0.05% | $70,893,942 |
| STATE STREET CORP | 5.4% | 13,356,128 | -1.8% | 0% | $68,116,253 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 10,471,494 | +1% | 0% | $53,404,619 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 3.9% | 9,546,732 | +17% | 0.07% | $48,688,000 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.2% | 8,026,774 | +20% | 0% | $40,936,547 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 6,401,736 | +6.6% | 0% | $32,655,404 |
| Jupiter Topco LLC | 2.1% | 5,302,311 | 0% | 0.01% | $27,042,528 |
| TWO SIGMA INVESTMENTS, LP | 2.1% | 5,209,823 | +22% | 0.02% | $26,570,097 |
| Nuveen, LLC | 1.6% | 3,997,099 | -24% | 0% | $20,385,205 |
| GOLDMAN SACHS GROUP INC | 1.5% | 3,685,034 | +15% | 0% | $18,793,673 |
| AIGH Capital Management LLC | 1.3% | 3,200,000 | 1.5% | $16,320,000 | |
| MORGAN STANLEY | 0.97% | 2,389,546 | +40% | 0% | $12,186,687 |
| AQR CAPITAL MANAGEMENT LLC | 0.94% | 2,316,220 | -5.1% | 0% | $11,812,722 |
| NORTHERN TRUST CORP | 0.92% | 2,280,143 | +10% | 0% | $11,628,729 |
| Rock Springs Capital Management LP | 0.91% | 2,241,769 | -2.5% | 0.56% | $11,433,022 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.9% | 2,211,760 | +4.6% | 0% | $11,279,976 |
| BANK OF AMERICA CORP /DE/ | 0.88% | 2,163,500 | -7.4% | 0% | $11,033,851 |
| Qube Research & Technologies Ltd | 0.85% | 2,090,675 | -14% | 0.01% | $10,662,443 |
| JONES FINANCIAL COMPANIES LLLP | 0.71% | 1,765,932 | -5% | 0% | $9,800,923 |
| VANGUARD FIDUCIARY TRUST CO | 0.71% | 1,754,819 | +4.6% | 0% | $8,949,577 |
| Eversept Partners, LP | 0.68% | 1,678,345 | -25% | 0.47% | $8,559,560 |
| J. Goldman & Co LP | 0.64% | 1,579,828 | -47% | 0.28% | $8,057,123 |
| Invesco Ltd. | 0.55% | 1,368,868 | +338% | 0% | $6,981,226 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q2 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 177,440,250 | $906,354,056 | +$50,435,976 | $5.10 | 247 |
| 2026 Q1 | 169,589,913 | $1,014,410,696 | +$29,661,202 | $5.99 | 241 |
| 2025 Q4 | 166,742,867 | $972,189,997 | -$19,578,141 | $5.83 | 228 |
| 2025 Q3 | 161,691,530 | $891,018,221 | -$30,479,434 | $5.51 | 220 |
| 2025 Q2 | 167,710,260 | $657,039,970 | +$8,960,616 | $3.92 | 203 |
| 2025 Q1 | 164,576,582 | $808,416,494 | +$58,328,254 | $4.91 | 220 |
| 2024 Q4 | 150,859,849 | $764,834,270 | +$39,500,927 | $5.07 | 211 |
| 2024 Q3 | 141,707,765 | $975,933,629 | -$20,620,523 | $6.89 | 200 |
| 2024 Q2 | 144,224,130 | $1,068,439,534 | +$27,386,203 | $7.41 | 194 |
| 2024 Q1 | 140,660,510 | $1,026,744,623 | +$30,824,013 | $7.30 | 187 |
| 2023 Q4 | 136,969,310 | $849,140,365 | +$78,952,256 | $6.20 | 158 |
| 2023 Q3 | 125,847,784 | $513,505,151 | +$7,178,966 | $4.08 | 150 |
| 2023 Q2 | 125,431,955 | $425,166,678 | +$30,557,318 | $3.39 | 144 |
| 2023 Q1 | 113,675,323 | $544,693,922 | +$165,294,361 | $4.79 | 129 |
| 2022 Q4 | 78,419,304 | $223,207,438 | +$72,727,186 | $2.85 | 98 |
| 2022 Q3 | 66,773,937 | $79,510,458 | +$36,649,057 | $1.19 | 78 |
| 2022 Q2 | 38,015,789 | $22,668,222 | -$3,885,722 | $0.59 | 72 |
| 2022 Q1 | 39,645,840 | $42,412,652 | -$2,239,091 | $1.07 | 85 |
| 2021 Q4 | 41,835,051 | $46,015,167 | -$11,862,592 | $1.10 | 95 |
| 2021 Q3 | 48,724,792 | $64,486,313 | -$260,541,309 | $1.32 | 98 |
| 2021 Q2 | 84,843,798 | $643,129,955 | +$1,702,726 | $7.58 | 120 |
| 2021 Q1 | 84,628,144 | $559,673,700 | +$30,418,660 | $6.62 | 120 |
| 2020 Q4 | 80,265,333 | $519,321,662 | +$11,395,260 | $6.47 | 118 |
| 2020 Q3 | 77,475,843 | $406,751,205 | -$2,248,690 | $5.25 | 107 |
| 2020 Q2 | 77,584,170 | $536,863,818 | +$8,872,855 | $6.92 | 124 |