William Blair & Company
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William Blair & Company’s Invesco FTSE RAFI US 1000 ETF PRF Stock Holding History

William Blair & Company’s Portfolio PRF Stock Details PRF Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$7.31M Buy
153,748
+14,164
+10% +$688K 0.02% 420
2025
Q4 		$6.55M Buy
139,584
+4,430
+3% +$204K 0.02% 452
2025
Q3 		$6.11M Sell
135,154
-483
-0.4% -$21.1K 0.02% 473
2025
Q2 		$5.73M Buy
135,637
+3,122
+2% +$125K 0.02% 459
2025
Q1 		$5.35M Buy
132,515
+527
+0.4% +$21.7K 0.02% 466
2024
Q4 		$5.32M Sell
131,988
-536
-0.4% -$22.1K 0.02% 482
2024
Q3 		$5.38M Sell
132,524
-1,468
-1% -$57.6K 0.02% 488
2024
Q2 		$5.09M Sell
133,992
-1,862
-1% -$70.2K 0.02% 487
2024
Q1 		$5.23M Sell
135,854
-143
-0.1% -$5.19K 0.02% 468
2023
Q4 		$4.79M Sell
135,997
-8,889
-6% -$291K 0.02% 471
2023
Q3 		$4.61M Sell
144,886
-12,604
-8% -$416K 0.02% 457
2023
Q2 		$5.15M Sell
157,490
-2,840
-2% -$89.6K 0.02% 437
2023
Q1 		$5.03M Sell
160,330
-26,490
-14% -$840K 0.02% 440
2022
Q4 		$5.8M Buy
186,820
+1,260
+0.7% +$38.8K 0.03% 400
2022
Q3 		$5.15M Sell
185,560
-58,215
-24% -$1.79M 0.02% 402
2022
Q2 		$7.23M Sell
243,775
-12,705
-5% -$408K 0.03% 344
2022
Q1 		$8.76M Buy
256,480
+72,160
+39% +$2.44M 0.03% 346
2021
Q4 		$6.33M Buy
184,320
+49,220
+36% +$1.65M 0.02% 437
2021
Q3 		$4.28M Buy
135,100
+6,095
+5% +$197K 0.01% 492
2021
Q2 		$4.14M Buy
129,005
+76,535
+146% +$2.44M 0.01% 503
2021
Q1 		$1.59M Buy
52,470
+15,675
+43% +$450K 0.01% 756
2020
Q4 		$980K Buy
36,795
+1,165
+3% +$29K ﹤0.01% 860
2020
Q3 		$811K Hold
35,630
– – ﹤0.01% 822
2020
Q2 		$772K Sell
35,630
-3,000
-8% -$62.5K ﹤0.01% 803
2020
Q1 		$714K Buy
38,630
+1,750
+5% +$40.6K ﹤0.01% 770
2019
Q4 		$935K Hold
36,880
– – ﹤0.01% 800
2019
Q3 		$869K Buy
36,880
+2,095
+6% +$48.9K 0.01% 793
2019
Q2 		$811K Sell
34,785
-14,240
-29% -$328K ﹤0.01% 822
2019
Q1 		$1.11M Buy
49,025
+7,890
+19% +$174K 0.01% 706
2018
Q4 		$836K Buy
+41,135
New +$912K 0.01% 746
2018
Q2 		– Sell
-36,620
Closed -$807K – 1624
2018
Q1 		$807K Buy
36,620
+5,830
+19% +$133K 0.01% 765
2017
Q4 		$699K Buy
30,790
+990
+3% +$21.8K ﹤0.01% 856
2017
Q3 		$639K Buy
29,800
+1,500
+5% +$31.4K ﹤0.01% 851
2017
Q2 		$585K Hold
28,300
– – ﹤0.01% 923
2017
Q1 		$586K Buy
28,300
+2,325
+9% +$47.4K ﹤0.01% 861
2016
Q4 		$517K Buy
25,975
+1,375
+6% +$26.4K ﹤0.01% 826
2016
Q3 		$461K Hold
24,600
– – ﹤0.01% 860
2016
Q2 		$445K Buy
24,600
+12,685
+106% +$227K ﹤0.01% 842
2016
Q1 		$210K Buy
+11,915
New +$199K ﹤0.01% 1053

Other funds holding PRF

Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
PNC Financial Services Group
PNC Financial Services Group Pittsburgh, Pennsylvania $173B AUM 20.72% 1-Year Est. Return
Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return
WA
Waverly Advisors Birmingham, Alabama $13.4B AUM 18.56% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Mariner
Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return
Commonwealth Equity Services
Commonwealth Equity Services Waltham, Massachusetts $79.5B AUM 27.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

William Blair & Company's PRF Position: Q1 2026 in Review

William Blair & Company increased its Invesco FTSE RAFI US 1000 ETF (PRF) stake by 10% in Q1 2026, buying an estimated $688K and bringing the position to 153,748 shares worth $7.31M. The position accounts for 0.02% of the portfolio, ranked #420.

William Blair & Company first reported a position in PRF in Q1 2016 and has held it in 39 quarters since. The position peaked at $8.76M in Q1 2022. 559 funds tracked by Wall St. Rank hold PRF as of Q1 2026.

  • William Blair & Company held 153,748 shares of Invesco FTSE RAFI US 1000 ETF worth $7.31M as of Q1 2026.
  • William Blair & Company bought 14,164 Invesco FTSE RAFI US 1000 ETF shares in Q1 2026, an estimated $688K.
  • Invesco FTSE RAFI US 1000 ETF made up 0.02% of William Blair & Company's portfolio in Q1 2026, its #420 holding.
  • William Blair & Company first reported a position in Invesco FTSE RAFI US 1000 ETF in Q1 2016 and has held it in 39 quarters since.
  • William Blair & Company's Invesco FTSE RAFI US 1000 ETF position peaked at $8.76M in Q1 2022.
  • 559 funds tracked by Wall St. Rank held Invesco FTSE RAFI US 1000 ETF as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.