Ardelyx, Inc.
MX ˙ BMV ˙ US0396971071
SecurityMX:ARDX / Ardelyx, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership264,770 shares
Latest Disclosed Value $ 1,543,609
Alliancebernstein L.p. reports 0.96% decrease in ownership of ARDX / Ardelyx, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 264,770 shares of Ardelyx, Inc. (MX:ARDX) valued at $1,543,609 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 267,340 shares of Ardelyx, Inc.. This represents a change in shares of -0.96% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ARDELYX COM 039697107 264,770 -2,570 -0.96 1,544 -0.96 0.0004
2026-02-17 2025-12-31 13F ARDELYX COM 039697107 267,340 0 0.00 1,559 5.77 0.0005
2025-11-14 2025-09-30 13F ARDELYX COM 039697107 267,340 3,500 1.33 1,473 42.46 0.0005
2025-08-14 2025-06-30 13F ARDELYX COM 039697107 263,840 0 0.00 1,034 -20.15 0.0003
2025-05-15 2025-03-31 13F ARDELYX COM 039697107 263,840 0 0.00 1,295 -3.14 0.0005
2025-02-12 2024-12-31 13F ARDELYX COM 039697107 263,840 0 0.00 1,338 -26.42 0.0005
2024-11-14 2024-09-30 13F ARDELYX COM 039697107 263,840 0 0.00 1,818 -7.06 0.0006
2024-08-14 2024-06-30 13F ARDELYX COM 039697107 263,840 44,540 20.31 1,955 22.19 0.0007
2024-05-14 2024-03-31 13F ARDELYX COM 039697107 219,300 0 0.00 1,601 17.73 0.0006
2024-02-14 2023-12-31 13F ARDELYX COM 039697107 219,300 0 0.00 1,360 52.01 0.0005
2023-11-14 2023-09-30 13F ARDELYX COM 039697107 219,300 0 0.00 895 20.32 0.0004
2023-08-15 2023-06-30 13F ARDELYX COM 039697107 219,300 219,300 743 0.0003
2022-08-15 2022-06-30 13F ARDELYX COM 039697107 0 -59,900 -100.00 0 -100.00
2022-05-13 2022-03-31 13F ARDELYX COM 039697107 59,900 300 0.50 64 -3.03 0.0000
2022-02-14 2021-12-31 13F ARDELYX COM 039697107 59,600 0 0.00 66 -16.46 0.0000
2021-11-10 2021-09-30 13F ARDELYX COM 039697107 59,600 -14,400 -19.46 79 -85.92 0.0000
2021-07-30 2021-06-30 13F ARDELYX COM 039697107 74,000 10,100 15.81 561 32.62 0.0002
2021-05-06 2021-03-31 13F ARDELYX COM 039697107 63,900 -9,000 -12.35 423 -10.38 0.0002
2021-02-08 2020-12-31 13F ARDELYX COM 039697107 72,900 0 0.00 472 23.24 0.0002
2020-11-12 2020-09-30 13F ARDELYX COM 039697107 72,900 0 0.00 383 -24.01 0.0002
2020-08-13 2020-06-30 13F ARDELYX COM 039697107 72,900 8,100 12.50 504 36.96 0.0003
2020-05-14 2020-03-31 13F ARDELYX COM 039697107 64,800 29,500 83.57 368 38.87 0.0003
2020-02-18 2019-12-31 13F ARDELYX COM 039697107 35,300 0 0.00 265 59.64 0.0002
2019-11-14 2019-09-30 13F ARDELYX COM 039697107 35,300 -14,100 -28.54 166 24.81 0.0001
2019-08-14 2019-06-30 13F ARDELYX COM 039697107 49,400 3,000 6.47 133 2.31 0.0001
2019-05-14 2019-03-31 13F ARDELYX COM 039697107 46,400 -6,500 -12.29 130 36.84 0.0001
2019-02-13 2018-12-31 13F ARDELYX COM 039697107 52,900 0 0.00 95 -58.70 0.0001
2018-11-08 2018-09-30 13F ARDELYX COM 039697107 52,900 4,000 8.18 230 27.07 0.0002
2018-08-13 2018-06-30 13F ARDELYX COM 039697107 48,900 15,800 47.73 181 8.38 0.0001
2018-05-14 2018-03-31 13F ARDELYX COM 039697107 33,100 0 0.00 167 -23.39 0.0001
2018-02-13 2017-12-31 13F ARDELYX COM 039697107 33,100 -27,400 -45.29 218 -35.69 0.0002
2017-11-13 2017-09-30 13F ARDELYX COM 039697107 60,500 0 0.00 339 9.71 0.0003
2017-08-10 2017-06-30 13F ARDELYX COM 039697107 60,500 46,800 341.61 309 78.61 0.0002
2017-05-11 2017-03-31 13F ARDELYX COM 039697107 13,700 1,000 7.87 173 -3.89 0.0001
2017-02-13 2016-12-31 13F ARDELYX COM 039697107 12,700 0 0.00 180 9.76 0.0001
2016-11-10 2016-09-30 13F ARDELYX COM 039697107 12,700 2,300 22.12 164 80.22 0.0001
2016-08-11 2016-06-30 13F ARDELYX COM 039697107 10,400 10,400 0.00 91 0.0001
2015-08-14 2015-06-30 13F ARDELYX COM 039697107 0 -2,300 -100.00 0 -100.00
2015-05-13 2015-03-31 13F ARDELYX COM 039697107 2,300 2,300 30 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.