William Frels - Mairs & Power
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    245
Portfolio value:    $9,786,094,433
Holdings Activity Buys Sells    History
Holding/activity history for  ADC Telecom (ADU1)
← All ADU1 superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2010   Q4 0 0.00 Sell 100.00% 0.02 SEC
2010   Q3 118,335 0.02 Reduce 92.61% 0.38 $12,670.00 $1,499,304,000 SEC
2010   Q2 1,600,377 0.41 Reduce 4.43% <0.01 $7,410.00 $11,858,794,000 SEC
2010   Q1 1,674,493 0.19 Reduce 3.55% <0.01 $7,310.00 $12,240,544,000 SEC
2009   Q4 1,736,108 0.17 Reduce 2.05% <0.01 $6,210.00 $10,781,232,000 SEC
2009   Q3 1,772,521 0.24 Add 0.04% <0.01 $8,340.00 $14,782,827,000 SEC
2009   Q2 1,771,741 0.27 Add 0.56% <0.01 $7,960.00 $14,103,061,000 SEC
2009   Q1 1,761,912 0.17 Add 37.86% 0.05 $4,390.00 $7,734,795,000 SEC
2008   Q4 1,278,089 0.13 Reduce 38.70% 0.10 $5,470.00 $6,991,148,000 SEC
2008   Q3 2,084,876 0.26 Add 15.97% 0.04 $8,450.00 $17,617,205,000 SEC
2008   Q2 1,797,775 0.39 Add 8.66% 0.03 $14,770.00 $26,553,141,000 SEC
2008   Q1 1,654,447 0.28 Add 9.22% 0.02 $12,080.00 $19,985,723,000 SEC
2007   Q4 1,514,782 0.48 Add 4.36% 0.02 $15.55 $23,554,864 SEC
2007   Q3 1,451,553 0.34 Reduce 0.04% <0.01 $19,610.00 $28,464,960,000 SEC
2007   Q2 1,452,123 0.32 Reduce 0.50% <0.01 $18.33 $26,617,420 SEC
2007   Q1 1,459,403 0.31 Reduce 0.44% <0.01 $16.74 $24,430,411 SEC
2006   Q4 1,465,902 0.27 Add 9.46% 0.02 $14.53 $21,299,560 SEC
2006   Q3 1,339,193 0.55 Reduce 16.63% 0.12 $15.01 $20,101,291 SEC
2006   Q2 1,606,374 0.70 Add 17.01% 0.10 $16.86 $27,083,468 SEC
2006   Q1 1,372,822 0.48 Reduce 0.63% <0.01 $25.59 $35,130,526 SEC
2005   Q4 1,381,486 0.45 Add 3.10% 0.01 $22.32 $30,834,777 SEC
2005   Q3 1,339,920 0.96 Add 15.60% 0.13 $22.86 $30,630,571 SEC
2005   Q2 1,159,065 0.40 Buy 0.40 $21.77 $25,232,845 SEC