CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in ARDX — Ardelyx, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in ARDX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$12,663,447
+$319,629 QoQ
Shares Held
2,114,098
-0.2% QoQ
Ownership
0.856%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ARDX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $6,182,986,350 across 288 Biotechnology names. ARDX ranks #85 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,920,871 | $857,745,736 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
804,508 | $621,595,061 | |
| 3 | MRNA |
Moderna, Inc.
|
4,734,356 | $240,505,284 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
673,356 | $222,793,299 | |
| 5 | INSM |
INSMED Inc
|
1,069,390 | $174,866,652 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
1,735,476 | $168,775,041 | |
| 7 | INCY |
Incyte Corp
|
1,729,102 | $162,743,080 | |
| 8 | BBIO |
BridgeBio Pharma, Inc.
|
1,976,094 | $146,744,740 |
All Filings in ARDX
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $12,663,447 | 2,114,098 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $12,343,818 | 2,117,293 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $12,093,094 | 2,194,754 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $8,611,644 | 2,196,848 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $10,151,562 | 2,067,528 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $10,318,134 | 2,035,135 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $13,358,180 | 1,938,778 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $14,064,743 | 1,898,076 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $13,532,937 | 1,853,827 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $11,263,738 | 1,816,732 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $6,798,369 | 1,666,267 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $1,978,787 | 583,713 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $392,626 | 81,968 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $233,608 | 81,968 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $59,500 | 50,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $29,500 | 50,000 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $277,581 | 259,422 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $285,364 | 259,422 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $241,905 | 183,262 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $1,584,310 | 209,012 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $1,600,034 | 241,697 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $1,536,741 | 237,518 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,225,785 | 233,483 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $1,663,208 | 240,348 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $882,800 | 155,286 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||