Stephen Mandel - Lone Pine Capital
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    36
Portfolio value:    $12,543,849,391
Holdings Activity Buys Sells    History
Holding/activity history for  TransDigm Group Inc. (TDG)
← All TDG superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 35,677 0.33 Add 85.55% 0.15 $1,126.70–1,463.03 · VW $1,304.43i $41,348,216 SEC
2025   Q4 19,228 0.19 Buy 0.19 $1,235.69–1,367.65 · VW $1,313.26i $25,570,356 SEC
2023   Q4 0 0.00 Sell 100.00% 3.55 $802.46–1,018.50 · VW $912.12i SEC
2023   Q3 436,740 3.55 Reduce 25.09% 1.20 $834.05–940.00 · VW $883.13i $368,228,596 SEC
2023   Q2 582,986 4.78 Reduce 16.58% 0.79 $714.98–899.56 · VW $799.49i $521,288,592 SEC
2023   Q1 698,848 4.77 Reduce 9.91% 0.46 $623.58–772.01 · VW $720.37i $515,085,918 SEC
2022   Q4 775,690 4.66 Add 5.18% 0.23 $499.63–648.40 · VW $595.44i $488,413,209 SEC
2022   Q3 737,523 3.65 Buy 3.65 $514.81–680.00 · VW $592.46i $387,067,000 SEC
2021   Q4 0 0.00 Sell 100.00% 1.65 $552.72–686.06 · VW $614.44i SEC
2021   Q3 784,342 1.65 Add 9.32% 0.14 $581.03–662.31 · VW $621.76i $489,876,000 SEC
2021   Q2 717,463 1.50 Buy 1.50 $576.53–688.03 · VW $634.47i $464,407,000 SEC
2020   Q4 0 0.00 Sell 100.00% 1.54 $453.76–622.57 · VW $539.79i SEC
2020   Q3 754,410 1.54 Reduce 56.91% 2.26 $405.01–529.20 · VW $467.24i $358,435,000 SEC
2020   Q2 1,750,708 3.97 Add 125.62% 2.21 $260.00–537.56 · VW $391.79i $773,900,000 SEC
2020   Q1 775,953 1.56 Reduce 38.14% 1.47 $200.06–673.51 · VW $452.34i $248,452,000 SEC
2019   Q4 1,254,428 3.86 Reduce 2.31% 0.09 $497.33–597.94 · VW $550.73i $702,480,000 SEC
2019   Q3 1,284,058 4.03 Reduce 19.01% 0.94 $455.40–555.27 · VW $510.07i $668,570,000 SEC
2019   Q2 1,585,504 4.97 Reduce 4.56% 0.21 $437.98–501.17 · VW $467.87i $767,067,000 SEC
2019   Q1 1,661,253 4.59 Add 9.11% 0.38 $324.86–455.72 · VW $413.07i $754,192,000 SEC
2018   Q4 1,522,520 3.66 Reduce 13.65% 0.48 $307.36–375.35 · VW $342.76i $517,748,000 SEC
2018   Q3 1,763,113 3.53 Add 0.07% <0.01 $338.04–377.67 · VW $361.70i $656,407,000 SEC
2018   Q2 1,761,813 3.31 Add 24.92% 0.66 $298.36–347.66 · VW $328.48i $608,072,000 SEC
2018   Q1 1,410,402 2.19 $306.94 $432,909,000 SEC
2017   Q4 1,410,402 2.02 Buy 2.02 $254.94–285.57 · VW $274.46i $387,325,000 SEC
2017   Q1 0 0.00 Sell 100.00% 2.64 $203.72–259.57 · VW $232.05i SEC
2016   Q4 2,028,392 2.64 Reduce 9.88% 0.29 $235.14–293.19 · VW $259.03i $504,988,000 SEC
2016   Q3 2,250,775 2.97 Reduce 5.45% 0.16 $257.28–294.38 · VW $280.76i $650,744,000 SEC
2016   Q2 2,380,420 2.90 Add 12.40% 0.32 $217.04–268.00 · VW $250.41i $627,693,000 SEC
2016   Q1 2,117,859 2.40 Reduce 2.46% 0.06 $180.76–232.42 · VW $215.68i $466,649,000 SEC
2015   Q4 2,171,359 2.31 Reduce 1.99% 0.05 $210.22–238.51 · VW $225.18i $496,047,000 SEC
2015   Q3 2,215,423 2.30 $212.41 $470,578,000 SEC
2015   Q2 2,215,423 2.45 $224.67 $497,739,000 SEC
2015   Q1 2,215,423 2.36 Add 23.99% 0.46 $194.30–226.21 · VW $211.32i $484,557,000 SEC
2014   Q4 1,786,836 1.83 $196.35 $350,845,249 SEC
2014   Q3 1,786,836 1.61 Add 82.44% 0.73 $164.74–192.25 · VW $178.51i $329,367,000 SEC
2014   Q2 979,395 0.84 Reduce 5.27% 0.05 $162.20–198.29 · VW $179.64i $163,814,000 SEC
2014   Q1 1,033,918 1.04 Reduce 62.66% 1.47 $158.87–187.64 · VW $176.22i $191,482,000 SEC
2013   Q4 2,768,629 2.34 Add 8.31% 0.18 $136.86–162.95 · VW $150.25i $445,805,000 SEC
2013   Q3 2,556,210 1.82 $138.70 $354,546,000 SEC
2013   Q2 2,556,210 2.25 $156.77 $400,737,000 SEC
2013   Q1 2,556,210 2.15 Reduce 12.29% 0.32 $133.00–153.12 · VW $140.91i $390,896,000 SEC
2012   Q4 2,914,384 2.63 Reduce 16.06% 0.50 $116.61–152.62 · VW $133.74i $397,405,000 SEC
2012   Q3 3,472,092 3.14 $141.87 $492,586,000 SEC
2012   Q2 3,472,092 2.91 Add 4.21% 0.12 $111.56–134.43 · VW $125.56i $466,302,000 SEC
2012   Q1 3,331,859 2.62 Add 6.80% 0.17 $91.97–121.48 · VW $111.17i $385,696,000 SEC
2011   Q4 3,119,601 2.40 Add 0.97% 0.02 $74.30–102.73 · VW $92.89i $298,483,000 SEC
2011   Q3 3,089,601 2.25 Add 2.08% 0.05 $73.76–95.04 · VW $86.40i $252,328,000 SEC
2011   Q2 3,026,501 2.39 Add 4.80% 0.11 $76.82–91.31 · VW $84.29i $275,987,000 SEC
2011   Q1 2,887,779 2.16 $83.83 $242,083,000 SEC
2010   Q4 2,887,779 1.94 Buy 1.94 $60.89–72.93 · VW $67.78i $207,949,000 SEC
Price snapshot:
Current price$1,235.00
Avg. buy price$1,251.06
+/- since buy-1.28%
52-week low$1,123.61
52-week high$1,519.36