Ken Griffin’s iShares National Muni Bond ETF MUB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$17.5M Buy
165,200
+125,000
+311% +$13.4M ﹤0.01% 2490
2025
Q4
$4.31M Sell
40,200
-235,500
-85% -$25.2M ﹤0.01% 4512
2025
Q3
$29.4M Buy
275,700
+247,300
+871% +$25.9M ﹤0.01% 1897
2025
Q2
$2.97M Sell
28,400
-26,900
-49% -$2.8M ﹤0.01% 4997
2025
Q1
$5.83M Sell
55,300
-225,800
-80% -$24M ﹤0.01% 3640
2024
Q4
$30M Sell
281,100
-400
-0.1% -$43K 0.01% 1739
2024
Q3
$30.6M Buy
281,500
+235,800
+516% +$25.4M 0.01% 1665
2024
Q2
$4.87M Sell
45,700
-178,200
-80% -$19M ﹤0.01% 3783
2024
Q1
$24.1M Sell
223,900
-581,900
-72% -$62.8M ﹤0.01% 1888
2023
Q4
$87.4M Buy
805,800
+801,900
+20,562% +$83.8M 0.02% 774
2023
Q3
$400K Buy
3,900
+500
+15% +$52.7K ﹤0.01% 8556
2023
Q2
$363K Sell
3,400
-1,100
-24% -$118K ﹤0.01% 8634
2023
Q1
$485K Sell
4,500
-3,600
-44% -$385K ﹤0.01% 8385
2022
Q4
$855K Buy
8,100
+5,100
+170% +$532K ﹤0.01% 7118
2022
Q3
$308K Sell
3,000
-9,000
-75% -$957K ﹤0.01% 9514
2022
Q2
$1.28M Buy
12,000
+1,400
+13% +$149K ﹤0.01% 6465
2022
Q1
$1.16M Buy
+10,600
New +$1.2M ﹤0.01% 7369
2021
Q4
Sell
-14,100
Closed -$1.64M 14408
2021
Q3
$1.64M Sell
14,100
-9,700
-41% -$1.14M ﹤0.01% 6866
2021
Q2
$2.79M Buy
23,800
+16,900
+245% +$1.97M ﹤0.01% 5783
2021
Q1
$801K Sell
6,900
-24,000
-78% -$2.8M ﹤0.01% 8643
2020
Q4
$3.62M Sell
30,900
-23,400
-43% -$2.72M ﹤0.01% 4255
2020
Q3
$6.29M Buy
54,300
+8,400
+18% +$976K ﹤0.01% 2845
2020
Q2
$5.3M Sell
45,900
-4,800
-9% -$545K ﹤0.01% 3011
2020
Q1
$5.73M Buy
+50,700
New +$5.79M ﹤0.01% 2541
2019
Q4
Sell
-2,200
Closed -$251K 9508
2019
Q3
$251K Sell
2,200
-500
-19% -$57K ﹤0.01% 7831
2019
Q2
$305K Sell
2,700
-17,300
-87% -$1.94M ﹤0.01% 7564
2019
Q1
$2.22M Buy
20,000
+300
+2% +$32.9K ﹤0.01% 4289
2018
Q4
$2.15M Buy
19,700
+5,900
+43% +$635K ﹤0.01% 4033
2018
Q3
$1.49M Sell
13,800
-5,500
-28% -$598K ﹤0.01% 4884
2018
Q2
$2.1M Buy
19,300
+14,800
+329% +$1.61M ﹤0.01% 4035
2018
Q1
$490K Sell
4,500
-6,700
-60% -$731K ﹤0.01% 5916
2017
Q4
$1.24M Buy
11,200
+100
+0.9% +$11.1K ﹤0.01% 4344
2017
Q3
$1.23M Buy
11,100
+1,700
+18% +$189K ﹤0.01% 4020
2017
Q2
$1.03M Sell
9,400
-2,400
-20% -$264K ﹤0.01% 4031
2017
Q1
$1.29M Sell
11,800
-600
-5% -$65K ﹤0.01% 3628
2016
Q4
$1.34M Buy
12,400
+5,100
+70% +$558K ﹤0.01% 3444
2016
Q3
$823K Buy
+7,300
New +$827K ﹤0.01% 4084

Other funds holding MUB

Ken Griffin's MUB Position: Q1 2026 in Review

Ken Griffin opened a new position in iShares National Muni Bond ETF (MUB) in Q1 2026: 317,700 shares worth $33.7M. The stake represents 0.01% of the portfolio and ranks #1734 among its holdings. This is a return to the name: Ken Griffin previously reported a position in MUB as recently as Q3 2025.

Ken Griffin first reported a position in MUB in Q1 2017 and has held it in 24 quarters since. The position peaked at $184M in Q4 2023. 1,628 funds tracked by Wall St. Rank hold MUB as of Q1 2026.

  • Ken Griffin held 317,700 shares of iShares National Muni Bond ETF worth $33.7M as of Q1 2026.
  • iShares National Muni Bond ETF was a new Ken Griffin position in Q1 2026.
  • iShares National Muni Bond ETF made up 0.01% of Ken Griffin's portfolio in Q1 2026, its #1734 holding.
  • Ken Griffin first reported a position in iShares National Muni Bond ETF in Q1 2017 and has held it in 24 quarters since.
  • Ken Griffin's iShares National Muni Bond ETF position peaked at $184M in Q4 2023.
  • 1,628 funds tracked by Wall St. Rank held iShares National Muni Bond ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.