ARDELYX INC ARDX
COM · Common Stock · CUSIP 039697107 · ISIN US0396971071
Company in Fremont, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersFremont, CA
- Founded2007
- Websiteardelyx.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($4.6m this quarter). Holder counts are more reliable. Shares outstanding: 235.4m as of 2024-07-26, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $7.41. Options: 10 managers hold calls ($18.0m notional), 10 hold puts ($20.6m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 84 |
| Q4 2022 | 106 |
| Q1 2023 | 131 |
| Q2 2023 | 147 |
| Q3 2023 | 151 |
| Q4 2023 | 163 |
| Q1 2024 | 190 |
| Q2 2024 | 198 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 72 | 37 |
| Q1 2023 | 92 | 43 |
| Q2 2023 | 87 | 65 |
| Q3 2023 | 81 | 62 |
| Q4 2023 | 103 | 59 |
| Q1 2024 | 113 | 81 |
| Q2 2024 | 104 | 95 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $4.1m | $13.6m | 3.32 |
| Q4 2023 | $23.0m | $18.5m | 0.80 |
| Q1 2024 | $22.8m | $21.0m | 0.92 |
| Q2 2024 | $18.0m | $20.6m | 1.14 |
Biggest buyers
| JANUS HENDERSON GROUP PLC | Added | +3.9m |
| MACQUARIE GROUP LTD | Added | +3.2m |
| MILLENNIUM MANAGEMENT LLC | Added | +1.9m |
| GOLDMAN SACHS GROUP INC | Added | +930.2k |
| WELLS FARGO & COMPANY/MN | Added | +767.6k |
| FIRST TRUST ADVISORS LP | New | +652.9k |
| GROUP ONE TRADING LLC | New | +557.9k |
| BlackRock Inc. | Added | +456.5k |
| OBERWEIS ASSET MANAGEMENT INC/ | New | +371.8k |
| Squarepoint Ops LLC | Added | +363.9k |
Biggest sellers
| MORGAN STANLEY | Reduced | -4.2m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -2.2m |
| STATE STREET CORP | Reduced | -2.1m |
| Cubist Systematic Strategies, LLC | Sold out | -1.4m |
| Nuveen Asset Management, LLC | Reduced | -1.0m |
| CITIGROUP INC | Reduced | -798.4k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -552.1k |
| ORACLE INVESTMENT MANAGEMENT INC | Reduced | -551.6k |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | -522.4k |
| Schonfeld Strategic Advisors LLC | Reduced | -514.0k |
Biggest calls
| GROUP ONE TRADING LLC | Reduced | $5.4m725.5k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.2m706.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.4m329.0k shares |
| ORACLE INVESTMENT MANAGEMENT INC | Reduced | $1.9m259.6k shares |
| CITADEL ADVISORS LLC | Reduced | $1.4m193.6k shares |
| JANE STREET GROUP, LLC | Added | $792.9k107.0k shares |
| GTS SECURITIES LLC | Reduced | $495.0k66.8k shares |
| WOLVERINE TRADING, LLC | Reduced | $332.0k44.8k shares |
| Tyler-Stone Wealth Management | Reduced | $1.7k10 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| JANE STREET GROUP, LLC | Added | $5.1m692.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.7m492.9k shares |
| GROUP ONE TRADING LLC | Added | $3.6m491.8k shares |
| CITADEL ADVISORS LLC | Added | $3.6m489.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.0m268.0k shares |
| BANK OF AMERICA CORP /DE/ | Reduced | $1.6m216.0k shares |
| GTS SECURITIES LLC | Reduced | $546.9k73.8k shares |
| WOLVERINE TRADING, LLC | Added | $397.9k53.7k shares |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | Not comparable | $37.5k100.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Rubric Capital Management LP 13G · institution new · filed 2026-08-14 | 6.6% |
| INTEGRATED CORE STRATEGIES (US) LLC 13G · passive investor -1.7 pts · filed 2026-08-11 | 5.7% |
| STATE STREET CORP 13G · institution +0.6 pts · filed 2026-05-12 | 5.5% |
Fell to 5% or below in the last year: JANUS HENDERSON GROUP PLC (3.4%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-26)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 6 | $1.9k | 7 | $44.2k | — |
| Q4 2022 | 1 | $997.9k | 7 | $178.1k | — |
| Q1 2023 | 0 | — | 8 | $122.8k | — |
| Q2 2023 | 0 | — | 8 | $309.6k | $121.0k |
| Q3 2023 | 0 | — | 8 | $115.6k | $13.2k |
| Q4 2023 | 0 | — | 8 | $2.2m | $1.9m |
| Q1 2024 | 0 | — | 8 | $1.5m | $1.0m |
| Q2 2024 | 0 | — | 8 | $7.6m | $1.5m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-06-28 | RAAB MICHAEL President & CEO, director | Sold plan | $15.2k2.3k shares |
| 2024-06-21 | Blanks Robert Officer | Sold plan | $226.5k38.0k shares |
| 2024-06-13 | RAAB MICHAEL President & CEO, director | Sold plan | $232.8k35.0k shares |
| 2024-06-05 | Williams Laura A Chief Medical Officer | Sold | $1.0m145.0k shares |
| 2024-06-03 | Rosenbaum David P. Chief Development Officer · By Wife | Sold | $125.1k17.9k shares |
| 2024-05-29 | RAAB MICHAEL President & CEO, director | Sold plan | $50.4k7.5k shares |
| 2024-05-21 | RAAB MICHAEL President & CEO, director | Sold | $245.9k31.5k shares |
| 2024-05-21 | GRAMMER ELIZABETH A Officer | Sold | $54.1k6.9k shares |
| 2024-05-21 | Rodriguez Susan Chief Commercial Officer | Sold | $52.4k6.7k shares |
| 2024-05-21 | Renz Justin A Chief Financial Officer | Sold | $40.4k5.2k shares |
| 2024-05-21 | Blanks Robert Officer | Sold | $37.9k4.9k shares |
| 2024-05-21 | Rosenbaum David P. Chief Development Officer | Sold | $37.9k4.9k shares |
| 2024-05-21 | Williams Laura A Chief Medical Officer | Sold | $37.4k4.8k shares |
| 2024-05-21 | Felsch Robert Ora Officer | Sold | $27.2k3.5k shares |
| 2024-05-21 | Rosenbaum David P. Chief Development Officer | Sold | $17.2k2.2k shares |
| 2024-05-14 | RAAB MICHAEL President & CEO, director | Sold plan | $24.0k3.0k shares |
| 2024-05-06 | GRAMMER ELIZABETH A Officer | Sold | $2.5m284.2k shares |
| 2024-05-06 | Felsch Robert Ora Officer | Sold | $1.8m208.0k shares |
| 2024-05-03 | GRAMMER ELIZABETH A Officer | Sold plan | $405.0k45.0k shares |
| 2024-05-03 | Williams Laura A Chief Medical Officer | Sold plan | $333.6k39.9k shares |
| 2024-04-29 | RAAB MICHAEL President & CEO, director | Sold plan | $192.0k30.0k shares |
| 2024-04-15 | RAAB MICHAEL President & CEO, director | Sold plan | $53.0k7.5k shares |
| 2024-04-01 | RAAB MICHAEL President & CEO, director | Sold plan | $11.1k1.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| JANUS HENDERSON GROUP PLC 0.10% of their portfolio | 25.9m $192.1m | Added +3.9m |
| BlackRock Inc. 0.00% of their portfolio | 17.6m $130.1m | Added +456.5k |
| VANGUARD GROUP INC 0.00% of their portfolio | 13.7m $101.2m | Added +264.0k |
| STATE STREET CORP 0.00% of their portfolio | 12.0m $88.7m | Reduced -2.1m |
| MACQUARIE GROUP LTD 0.06% of their portfolio | 6.9m $51.1m | Added +3.2m |
| EVENTIDE ASSET MANAGEMENT, LLC 0.85% of their portfolio | 6.7m $49.4m | Reduced -146.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 5.5m $40.5m | Added +261.6k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 3.2m $23.7m | Added +1.9m |
| MORGAN STANLEY 0.00% of their portfolio | 3.0m $22.6m | Reduced -4.2m |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 2.9m $21.6m | Added +930.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.08% of their portfolio | 2.9m $21.4m | Reduced -414.9k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 2.2m $16.0m | Reduced -1.0m |
| NORTHERN TRUST CORP 0.00% of their portfolio | 2.1m $15.4m | Reduced -73.9k |
| TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio | 2.0m $14.9m | Reduced -552.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.9m $14.1m | Added +44.2k |
| Redmile Group, LLC 0.84% of their portfolio | 1.9m $13.9m | Reduced -313.1k |
| Rubric Capital Management LP 0.35% of their portfolio | 1.8m $13.5m | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 1.8m $13.4m | Added +283.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 1.7m $12.7m | Reduced -2.2m |
| ORACLE INVESTMENT MANAGEMENT INC 11.83% of their portfolio | 1.5m $11.0m | Reduced -551.6k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 1.5m $10.8m | Added +116.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio | 1.2m $9.0m | Reduced -421.6k |
| Propel Bio Management, LLC 4.44% of their portfolio | 924.6k $6.9m | Added +330.4k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 910.9k $6.7m | Reduced -54.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 884.2k $6.6m | Added +767.6k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 861.6k $6.4m | Reduced -359.2k |
| Lion Point Capital, LP 19.87% of their portfolio | 856.7k $6.3m | Reduced -190.0k |
| Aberdeen Group plc 0.01% of their portfolio | 851.7k $6.3m | Added +150.9k |
| Knott David M Jr 2.29% of their portfolio | 772.9k $5.7m | Reduced -52.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 762.1k $5.6m | Added +274.0k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 652.9k $4.8m | New |
| Rafferty Asset Management, LLC 0.02% of their portfolio | 642.7k $4.8m | Reduced -412.6k |
| Simplify Asset Management Inc. 0.39% of their portfolio | 598.0k $4.4m | Added +248.0k |
| Hennion & Walsh Asset Management, Inc. 0.22% of their portfolio | 588.2k $4.4m | Added +149.4k |
| GROUP ONE TRADING LLC 0.13% of their portfolio | 557.9k $4.1m | New |
| Pekin Hardy Strauss, Inc. 0.54% of their portfolio | 531.7k $3.9m | Reduced -11.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 479.4k $3.6m | Added +170.3k |
| UBS Group AG 0.00% of their portfolio | 474.4k $3.5m | Reduced -410.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 471.5k $3.5m | Added +348.6k |
| Squarepoint Ops LLC 0.01% of their portfolio | 460.7k $3.4m | Added +363.9k |
| Swiss National Bank 0.00% of their portfolio | 458.3k $3.4m | Unchanged |
| Palisades Investment Partners, LLC 1.66% of their portfolio | 452.6k $3.4m | First filing |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 443.7k $3.3m | Added +10.1k |
| BARCLAYS PLC 0.00% of their portfolio | 438.0k $3.2m | Reduced -21.2k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 416.4k $3.1m | Added +246.8k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.17% of their portfolio | 371.8k $2.8m | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 338.0k $2.5m | Added +393 |
| SIMPLEX TRADING, LLC 0.07% of their portfolio | 313.0k $2.3m | Added +170.3k |
| ExodusPoint Capital Management, LP 0.02% of their portfolio | 302.2k $2.2m | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 286.7k $2.1m | Reduced -75.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 284.0k $2.1m | Added +332 |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 279.8k $2.1m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 263.8k $2.0m | Added +44.5k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 260.6k $1.9m | Reduced -190.1k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 257.5k $1.9m | Reduced -18.2k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 250.1k $1.9m | Reduced -514.0k |
| CASTLEARK MANAGEMENT LLC 0.07% of their portfolio | 246.4k $1.8m | Added +31.2k |
| SEVEN EIGHT CAPITAL, LP 0.19% of their portfolio | 245.9k $1.8m | Reduced -128.2k |
| Legal & General Group Plc 0.00% of their portfolio | 238.8k $1.8m | Added +4.0k |
| Clay Northam Wealth Management, LLC 1.31% of their portfolio | 232.4k $1.7m | Added +141.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 227.3k $1.7m | Reduced -4.6k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 212.4k $1.6m | Reduced -323.9k |
| Trexquant Investment LP 0.02% of their portfolio | 205.7k $1.5m | Reduced -148.0k |
| TD Asset Management Inc 0.00% of their portfolio | 195.1k $1.4m | Reduced -315.2k |
| LPL Financial LLC 0.00% of their portfolio | 193.1k $1.4m | Added +63.9k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 186.1k $1.4m | Added +27.5k |
| Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio | 175.1k $1.3m | Added +13.6k |
| Gotham Asset Management, LLC 0.02% of their portfolio | 174.5k $1.3m | Added +101.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 161.0k $1.2m | Reduced -8.4k |
| Parkman Healthcare Partners LLC 0.15% of their portfolio | 150.2k $1.1m | Reduced -49.8k |
| CITIGROUP INC 0.00% of their portfolio | 145.1k $1.1m | Reduced -798.4k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 141.3k $1.0m | First filing |
| MetLife Investment Management, LLC 0.01% of their portfolio | 136.5k $1.0m | Added +20.1k |
| PFG Investments, LLC 0.07% of their portfolio | 134.1k $993.9k | Unchanged |
| Corebridge Financial, Inc. 0.01% of their portfolio | 125.0k $926.4k | First filing |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 121.6k $901.0k | Added +16.9k |
| PROFUND ADVISORS LLC 0.03% of their portfolio | 118.8k $880.0k | Reduced -46.1k |
| Invesco Ltd. 0.00% of their portfolio | 112.6k $834.1k | Reduced -2.7k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 112.3k $832.3k | New |
| GUGGENHEIM CAPITAL LLC 0.01% of their portfolio | 108.5k $803.8k | New |
| J. Goldman & Co LP 0.03% of their portfolio | 108.0k $800.4k | Reduced -160.8k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 100.0k $643.0k | Unchanged |
| SG Americas Securities, LLC 0.00% of their portfolio | 91.7k $679.0k | Added +67.8k |
| GTS SECURITIES LLC 0.01% of their portfolio | 88.1k $652.6k | Reduced -56.1k |
| B. Riley Wealth Advisors, Inc. 0.02% of their portfolio | 87.0k $644.7k | New |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.02% of their portfolio | 84.6k $626.8k | Reduced -27.3k |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 71.8k $531.7k | Unchanged |
| PERSONAL CFO SOLUTIONS, LLC 0.08% of their portfolio | 70.0k $518.7k | Unchanged |
| ADAR1 Capital Management, LLC 0.10% of their portfolio | 70.0k $518.7k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 65.1k $482.7k | Added +1.3k |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 64.8k $480.3k | Reduced -14.7k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 63.4k $469.0k | Added +35.7k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 63.2k $468.1k | Added +16.2k |
| Alpha DNA Investment Management LLC 0.26% of their portfolio | 61.5k $456.0k | New |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 60.8k $450.4k | New |
| XTX Topco Ltd 0.04% of their portfolio | 60.1k $445.5k | New |
| NORTH STAR ASSET MANAGEMENT INC 0.02% of their portfolio | 55.0k $407.6k | Unchanged |
| FMR LLC 0.00% of their portfolio | 53.8k $398.6k | Added +4.2k |
| Tyler-Stone Wealth Management 0.16% of their portfolio | 51.8k $383.7k | Added +2.8k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio | 51.1k $379.0k | Reduced -568 |