William Blair & Company
ARDX icon

William Blair & Company’s Ardelyx ARDX Stock Holding History

William Blair & Company’s Portfolio ARDX Stock Details ARDX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$136K Buy
26,635
+289
+1% +$1.76K ﹤0.01% 1636
2026
Q1 		$158K Buy
26,346
+1,839
+8% +$12.2K ﹤0.01% 1522
2025
Q4 		$143K Buy
24,507
+7
+0% +$39 ﹤0.01% 1517
2025
Q3 		$135K Hold
24,500
– – ﹤0.01% 1526
2025
Q2 		$96K Sell
24,500
-285
-1% -$1.18K ﹤0.01% 1520
2025
Q1 		$122K Buy
24,785
+10,000
+68% +$53.7K ﹤0.01% 1472
2024
Q4 		$75K Hold
14,785
– – ﹤0.01% 1560
2024
Q3 		$102K Hold
14,785
– – ﹤0.01% 1536
2024
Q2 		$110K Hold
14,785
– – ﹤0.01% 1498
2024
Q1 		$108K Buy
14,785
+285
+2% +$2.44K ﹤0.01% 1496
2023
Q4 		$89.9K Buy
+14,500
New +$65K ﹤0.01% 1517
2022
Q2 		– Sell
-12,500
Closed -$13K – 1863
2022
Q1 		$13K Sell
12,500
-5,000
-29% -$4.47K ﹤0.01% 1817
2021
Q4 		$19K Sell
17,500
-1,500
-8% -$1.78K ﹤0.01% 1862
2021
Q3 		$25K Sell
19,000
-6,000
-24% -$16K ﹤0.01% 1754
2021
Q2 		$190K Sell
25,000
-100
-0.4% -$739 ﹤0.01% 1517
2021
Q1 		$166K Buy
25,100
+100
+0.4% +$686 ﹤0.01% 1519
2020
Q4 		$162K Hold
25,000
– – ﹤0.01% 1479
2020
Q3 		$131K Hold
25,000
– – ﹤0.01% 1388
2020
Q2 		$173K Hold
25,000
– – ﹤0.01% 1279
2020
Q1 		$142K Hold
25,000
– – ﹤0.01% 1249
2019
Q4 		$188K Sell
25,000
-3,000
-11% -$18.2K ﹤0.01% 1324
2019
Q3 		$132K Buy
28,000
+3,000
+12% +$10.4K ﹤0.01% 1348
2019
Q2 		$67K Buy
+25,000
New +$75.3K ﹤0.01% 1463

Other funds holding ARDX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

William Blair & Company's ARDX Position: Q2 2026 in Review

William Blair & Company increased its Ardelyx (ARDX) stake by 1.1% in Q2 2026, buying an estimated $1.76K and bringing the position to 26,635 shares worth $136K. The position accounts for ﹤0.01% of the portfolio, ranked #1636.

William Blair & Company first reported a position in ARDX in Q2 2019 and has held it in 23 quarters since. The position peaked at $190K in Q2 2021. 250 funds tracked by Wall St. Rank hold ARDX as of Q2 2026.

  • William Blair & Company held 26,635 shares of Ardelyx worth $136K as of Q2 2026.
  • William Blair & Company bought 289 Ardelyx shares in Q2 2026, an estimated $1.76K.
  • Ardelyx made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1636 holding.
  • William Blair & Company first reported a position in Ardelyx in Q2 2019 and has held it in 23 quarters since.
  • William Blair & Company's Ardelyx position peaked at $190K in Q2 2021.
  • 250 funds tracked by Wall St. Rank held Ardelyx as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.