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BlackRock’s Perma-Fix Environmental Services PESI Stock Holding History

BlackRock’s Portfolio PESI Stock Details PESI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$12.5M Sell
1,170,303
-27,682
-2% -$381K ﹤0.01% 3359
2025
Q4 		$15.1M Buy
1,197,985
+30,253
+3% +$386K ﹤0.01% 3246
2025
Q3 		$11.8M Sell
1,167,732
-12,752
-1% -$141K ﹤0.01% 3369
2025
Q2 		$12.4M Buy
1,180,484
+87,962
+8% +$809K ﹤0.01% 3297
2025
Q1 		$7.94M Buy
1,092,522
+62,886
+6% +$565K ﹤0.01% 3434
2024
Q4 		$11.4M Buy
1,029,636
+22,818
+2% +$300K ﹤0.01% 3362
2024
Q3 		$12.4M Buy
1,006,818
+153,655
+18% +$1.64M ﹤0.01% 3301
2024
Q2 		$8.64M Buy
853,163
+577,957
+210% +$6.4M ﹤0.01% 3453
2024
Q1 		$3.27M Sell
275,206
-18,591
-6% -$161K ﹤0.01% 3832
2023
Q4 		$2.31M Sell
293,797
-1,456
-0.5% -$12.3K ﹤0.01% 3988
2023
Q3 		$3.09M Sell
295,253
-11,337
-4% -$125K ﹤0.01% 3856
2023
Q2 		$3.37M Buy
306,590
+5,829
+2% +$60.8K ﹤0.01% 3862
2023
Q1 		$3.54M Sell
300,761
-1,388
-0.5% -$9.03K ﹤0.01% 3789
2022
Q4 		$1.07M Buy
302,149
+447
+0.1% +$1.72K ﹤0.01% 4394
2022
Q3 		$1.35M Sell
301,702
-1,077
-0.4% -$5.53K ﹤0.01% 4371
2022
Q2 		$1.57M Buy
302,779
+374
+0.1% +$2.08K ﹤0.01% 4354
2022
Q1 		$1.67M Sell
302,405
-1,936
-0.6% -$11.3K ﹤0.01% 4460
2021
Q4 		$1.93M Buy
304,341
+1,491
+0.5% +$10.3K ﹤0.01% 4418
2021
Q3 		$2.01M Buy
302,850
+25,896
+9% +$159K ﹤0.01% 4322
2021
Q2 		$1.98M Sell
276,954
-87,965
-24% -$632K ﹤0.01% 4270
2021
Q1 		$2.67M Buy
364,919
+8,056
+2% +$54.5K ﹤0.01% 4194
2020
Q4 		$2.13M Buy
356,863
+1,703
+0.5% +$11.2K ﹤0.01% 4020
2020
Q3 		$2.5M Sell
355,160
-1,861
-0.5% -$12.8K ﹤0.01% 3844
2020
Q2 		$2.28M Sell
357,021
-694
-0.2% -$4.02K ﹤0.01% 3790
2020
Q1 		$1.86M Sell
357,715
-496
-0.1% -$3.51K ﹤0.01% 3673
2019
Q4 		$3.26M Sell
358,211
-4,056
-1% -$25.6K ﹤0.01% 3631
2019
Q3 		$1.64M Sell
362,267
-2,728
-0.7% -$10.6K ﹤0.01% 3821
2019
Q2 		$1.43M Sell
364,995
-2,126
-0.6% -$8.55K ﹤0.01% 3893
2019
Q1 		$1.29M Sell
367,121
-2,368
-0.6% -$7.88K ﹤0.01% 3839
2018
Q4 		$868K Sell
369,489
-123
-0% -$411 ﹤0.01% 3936
2018
Q3 		$1.55M Buy
369,612
+1,732
+0.5% +$7.93K ﹤0.01% 3846
2018
Q2 		$1.66M Buy
367,880
+9,916
+3% +$45K ﹤0.01% 3797
2018
Q1 		$1.49M Sell
357,964
-5,098
-1% -$19.9K ﹤0.01% 3772
2017
Q4 		$1.32M Buy
363,062
+1,340
+0.4% +$5.08K ﹤0.01% 3816
2017
Q3 		$1.38M Sell
361,722
-1,119
-0.3% -$4.1K ﹤0.01% 3808
2017
Q2 		$1.32M Sell
362,841
-12,722
-3% -$44K ﹤0.01% 3780
2017
Q1 		$1.18M Buy
+375,563
New +$1.25M ﹤0.01% 3783

Other funds holding PESI

MCO
MAK Capital One New York $679M AUM 29.02% 1-Year Est. Return
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
HA
Heartland Advisors Milwaukee, Wisconsin $1.96B AUM 28.26% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $16B AUM 4.15% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
PCM
Potomac Capital Management New York $115M AUM
Group One Trading
Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

BlackRock's PESI Position: Q1 2026 in Review

BlackRock reduced its Perma-Fix Environmental Services (PESI) stake by 2.3% in Q1 2026, selling an estimated $381K and leaving 1,170,303 shares worth $12.5M. The position accounts for ﹤0.01% of the portfolio, ranked #3359.

BlackRock first reported a position in PESI in Q1 2017 and has held it in 37 quarters since. The position peaked at $15.1M in Q4 2025. 85 funds tracked by Wall St. Rank hold PESI as of Q1 2026.

  • BlackRock held 1,170,303 shares of Perma-Fix Environmental Services worth $12.5M as of Q1 2026.
  • BlackRock sold 27,682 Perma-Fix Environmental Services shares in Q1 2026, an estimated $381K.
  • Perma-Fix Environmental Services made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #3359 holding.
  • BlackRock first reported a position in Perma-Fix Environmental Services in Q1 2017 and has held it in 37 quarters since.
  • BlackRock's Perma-Fix Environmental Services position peaked at $15.1M in Q4 2025.
  • 85 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.