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  Ciena Corp. (CIEN)
← All CIEN superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 2,800 0.01 Reduce 6.67% <0.01 $216.07–446.89 · VW $320.33i $1,087,044 SEC
2025   Q4 3,000 0.01 $233.87 $701,610 SEC
2025   Q3 3,000 <0.01 Reduce 25.00% <0.01 $76.89–146.53 · VW $107.95i $437,010 SEC
2025   Q2 4,000 <0.01 Buy <0.01 $49.21–86.21 · VW $73.05i $325,320 SEC
Price snapshot:
Current price$445.44
Avg. buy price$81.33
+/- since buy447.69%
52-week low$76.89
52-week high$637.51