Andreas Halvorsen - Viking Global Investors
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    77
Portfolio value:    $35,748,670,967
Holdings Activity Buys Sells    History
Holding/activity history for  Boston Scientific Corp. (BSX)
← All BSX superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 0 0.00 Sell 100.00% 0.64 $61.25–100.90 · VW $79.61i SEC
2025   Q4 2,509,808 0.64 Reduce 4.99% 0.03 $90.42–105.65 · VW $98.49i $239,310,193 SEC
2025   Q3 2,641,682 0.67 Reduce 13.27% 0.13 $95.84–109.50 · VW $103.22i $257,907,414 SEC
2025   Q2 3,045,764 0.95 Add 28.15% 0.21 $85.98–107.53 · VW $101.50i $327,145,511 SEC
2025   Q1 2,376,764 0.76 Add 9.42% 0.07 $88.81–107.17 · VW $100.41i $239,767,952 SEC
2024   Q4 2,172,208 0.63 Add 124.58% 0.35 $80.64–91.93 · VW $87.05i $194,021,619 SEC
2024   Q3 967,210 0.30 Buy 0.30 $71.88–84.89 · VW $78.68i $81,052,198 SEC
2024   Q2 0 0.00 Sell 100.00% 0.44 $66.80–77.99 · VW $73.61i SEC
2024   Q1 1,724,755 0.44 Reduce 23.94% 0.11 $57.11–68.92 · VW $64.77i $118,128,470 SEC
2023   Q4 2,267,761 0.48 Add 104.25% 0.25 $48.35–58.34 · VW $53.52i $131,099,263 SEC
2023   Q3 1,110,292 0.24 Buy 0.24 $49.69–55.38 · VW $52.84i $58,623,418 SEC
2023   Q2 0 0.00 Sell 100.00% 0.27 $49.38–54.75 · VW $52.10i SEC
2023   Q1 1,136,881 0.27 Reduce 88.07% 1.96 $44.35–50.21 · VW $47.41i $56,878,156 SEC
2022   Q4 9,528,593 2.22 Reduce 41.05% 1.19 $38.79–47.95 · VW $43.70i $440,887,998 SEC
2022   Q3 16,162,921 2.90 Add 10.30% 0.27 $36.15–43.52 · VW $40.14i $625,990,000 SEC
2022   Q2 14,653,954 2.51 Add 14.13% 0.31 $34.98–47.50 · VW $40.74i $546,153,000 SEC
2022   Q1 12,839,142 2.31 Reduce 32.29% 0.76 $40.80–45.32 · VW $43.31i $568,646,000 SEC
2021   Q4 18,961,501 2.34 Add 176.15% 1.49 $37.96–45.43 · VW $41.43i $805,485,000 SEC
2021   Q3 6,866,405 0.82 Reduce 48.43% 0.84 $40.93–46.29 · VW $44.31i $297,933,000 SEC
2021   Q2 13,315,816 1.73 Reduce 25.59% 0.53 $38.00–44.63 · VW $42.37i $569,384,000 SEC
2021   Q1 17,896,102 2.06 Reduce 40.33% 1.20 $34.58–40.13 · VW $37.43i $691,684,000 SEC
2020   Q4 29,990,892 2.97 Add 59.27% 1.11 $32.99–42.13 · VW $35.56i $1,078,173,000 SEC
2020   Q3 18,829,730 2.60 Add 2.02% 0.05 $33.77–42.37 · VW $38.70i $719,484,000 SEC
2020   Q2 18,457,273 2.80 Reduce 41.99% 2.27 $29.65–39.33 · VW $35.91i $648,035,000 SEC
2020   Q1 31,816,197 5.40 Add 72.06% 2.26 $24.10–46.13 · VW $36.60i $1,038,163,000 SEC
2019   Q4 18,491,662 3.92 Add 77.53% 1.71 $37.65–46.62 · VW $42.07i $836,193,000 SEC
2019   Q3 10,416,047 2.21 Add 13.28% 0.26 $39.75–43.84 · VW $42.13i $423,829,000 SEC
2019   Q2 9,195,192 1.77 Add 185.53% 1.15 $34.35–43.02 · VW $38.51i $395,209,000 SEC
2019   Q1 3,220,369 0.71 Reduce 38.09% 0.41 $32.73–41.00 · VW $38.17i $123,598,000 SEC
2018   Q4 5,201,828 1.07 Add 64.82% 0.42 $31.56–39.44 · VW $36.06i $183,833,000 SEC
2018   Q3 3,156,001 0.70 Buy 0.70 $32.27–39.13 · VW $35.25i $121,506,000 SEC
2015   Q4 0 0.00 Sell 100.00% 0.11 $16.25–19.06 · VW $18.08i SEC
2015   Q3 1,611,935 0.11 Buy 0.11 $14.18–18.11 · VW $16.75i $26,452,000 SEC
Price snapshot:
Current price$44.65
52-week low$42.25
52-week high$109.50