Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$6.08M Buy
33,143
+554
+2% +$102K 0.65% 59
2025
Q4
$5.74M Buy
32,589
+9,072
+39% +$1.48M 0.62% 58
2025
Q3
$3.29M Buy
+23,517
New +$3.18M 0.36% 105
2021
Q1
Sell
-10,358
Closed -$2.54M 180
2020
Q4
$2.54M Sell
10,358
-5,280
-34% -$1.36M 0.33% 109
2020
Q3
$4.44M Sell
15,638
-811
-5% -$226K 0.61% 58
2020
Q2
$4.4M Buy
16,449
+99
+0.6% +$29.8K 0.66% 57
2020
Q1
$5.17M Sell
16,350
-1,513
-8% -$459K 0.93% 32
2019
Q4
$5.3M Buy
+17,863
New +$4.96M 0.69% 60
2019
Q3
Sell
-14,291
Closed -$3.34M 177
2019
Q2
$3.34M Sell
14,291
-772
-5% -$178K 0.43% 94
2019
Q1
$3.56M Buy
15,063
+5,566
+59% +$1.75M 0.48% 83
2018
Q4
$2.86M Sell
9,497
-603
-6% -$192K 0.41% 93
2018
Q3
$3.57M Buy
+10,100
New +$3.48M 0.39% 100
2018
Q1
Sell
-24,619
Closed -$7.84M 197
2017
Q4
$7.84M Buy
24,619
+5,648
+30% +$1.81M 0.78% 36
2017
Q3
$5.94M Sell
18,971
-89
-0.5% -$26.4K 0.6% 55
2017
Q2
$5.17M Sell
19,060
-1,028
-5% -$272K 0.55% 62
2017
Q1
$5.49M Sell
20,088
-53
-0.3% -$15K 0.59% 55
2016
Q4
$5.71M Sell
20,141
-1,581
-7% -$469K 0.64% 48
2016
Q3
$6.8M Buy
+21,722
New +$6.43M 0.71% 46
2016
Q2
Sell
-13,413
Closed -$3.49M 210
2016
Q1
$3.49M Buy
13,413
+274
+2% +$72.4K 0.38% 101
2015
Q4
$4.03M Buy
13,139
+748
+6% +$215K 0.42% 99
2015
Q3
$3.62M Sell
12,391
-2,108
-15% -$696K 0.38% 98
2015
Q2
$5.86M Buy
14,499
+553
+4% +$222K 0.55% 55
2015
Q1
$5.89M Buy
13,946
+66
+0.5% +$26K 0.55% 59
2014
Q4
$4.71M Buy
+13,880
New +$4.49M 0.46% 78
2013
Q3
Sell
-9,979
Closed -$2.15M 311
2013
Q2
$2.15M Buy
+9,979
New +$2.13M 0.2% 140

Other funds holding BIIB

Leuthold Group's BIIB Position: Q1 2026 in Review

Leuthold Group increased its Biogen (BIIB) stake by 1.7% in Q1 2026, buying an estimated $102K and bringing the position to 33,143 shares worth $6.08M. The position accounts for 0.65% of the portfolio, ranked #59.

Leuthold Group first reported a position in BIIB in Q2 2013 and has held it in 25 quarters since. The position peaked at $7.84M in Q4 2017. 1,003 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Leuthold Group held 33,143 shares of Biogen worth $6.08M as of Q1 2026.
  • Leuthold Group bought 554 Biogen shares in Q1 2026, an estimated $102K.
  • Biogen made up 0.65% of Leuthold Group's portfolio in Q1 2026, its #59 holding.
  • Leuthold Group first reported a position in Biogen in Q2 2013 and has held it in 25 quarters since.
  • Leuthold Group's Biogen position peaked at $7.84M in Q4 2017.
  • 1,003 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Leuthold Group's 13F filing for Q1 2026, filed 6 May 2026.