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)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2026   Q1 35,677 0.33 Add 85.55% 0.15 $1,158.96 $41,348,216 SEC
2025   Q4 19,228 0.19 Buy 0.19 $1,329.85 $25,570,356 SEC
2023   Q4 0 0.00 Sell 100.00% 3.55 SEC
2023   Q3 436,740 3.55 Reduce 25.09% 1.20 $843.13 $368,228,596 SEC
2023   Q2 582,986 4.78 Reduce 16.58% 0.79 $894.17 $521,288,592 SEC
2023   Q1 698,848 4.77 Reduce 9.91% 0.46 $737.05 $515,085,918 SEC
2022   Q4 775,690 4.66 Add 5.18% 0.23 $629.65 $488,413,209 SEC
2022   Q3 737,523 3.65 Buy 3.65 $524.82 $387,067,000 SEC
2021   Q4 0 0.00 Sell 100.00% 1.65 SEC
2021   Q3 784,342 1.65 Add 9.32% 0.14 $624.57 $489,876,000 SEC
2021   Q2 717,463 1.50 Buy 1.50 $647.29 $464,407,000 SEC
2020   Q4 0 0.00 Sell 100.00% 1.54 SEC
2020   Q3 754,410 1.54 Reduce 56.91% 2.26 $475.12 $358,435,000 SEC
2020   Q2 1,750,708 3.97 Add 125.62% 2.21 $442.05 $773,900,000 SEC
2020   Q1 775,953 1.56 Reduce 38.14% 1.47 $320.19 $248,452,000 SEC
2019   Q4 1,254,428 3.86 Reduce 2.31% 0.09 $560.00 $702,480,000 SEC
2019   Q3 1,284,058 4.03 Reduce 19.01% 0.94 $520.67 $668,570,000 SEC
2019   Q2 1,585,504 4.97 Reduce 4.56% 0.21 $483.80 $767,067,000 SEC
2019   Q1 1,661,253 4.59 Add 9.11% 0.38 $453.99 $754,192,000 SEC
2018   Q4 1,522,520 3.66 Reduce 13.65% 0.48 $340.06 $517,748,000 SEC
2018   Q3 1,763,113 3.53 Add 0.07% <0.01 $372.30 $656,407,000 SEC
2018   Q2 1,761,813 3.31 Add 24.92% 0.66 $345.14 $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 $274.62 $387,325,000 SEC
2017   Q1 0 0.00 Sell 100.00% 2.64 SEC
2016   Q4 2,028,392 2.64 Reduce 9.88% 0.29 $248.96 $504,988,000 SEC
2016   Q3 2,250,775 2.97 Reduce 5.45% 0.16 $289.12 $650,744,000 SEC
2016   Q2 2,380,420 2.90 Add 12.40% 0.32 $263.69 $627,693,000 SEC
2016   Q1 2,117,859 2.40 Reduce 2.46% 0.06 $220.34 $466,649,000 SEC
2015   Q4 2,171,359 2.31 Reduce 1.99% 0.05 $228.45 $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 $218.72 $484,557,000 SEC
2014   Q4 1,786,836 1.83 $196,350.00 $350,845,249,000 SEC
2014   Q3 1,786,836 1.61 Add 82.44% 0.73 $184.33 $329,367,000 SEC
2014   Q2 979,395 0.84 Reduce 5.27% 0.05 $167.26 $163,814,000 SEC
2014   Q1 1,033,918 1.04 Reduce 62.66% 1.47 $185.20 $191,482,000 SEC
2013   Q4 2,768,629 2.34 Add 8.31% 0.18 $161.02 $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 $152.92 $390,896,000 SEC
2012   Q4 2,914,384 2.63 Reduce 16.06% 0.50 $136.36 $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 $134.30 $466,302,000 SEC
2012   Q1 3,331,859 2.62 Add 6.80% 0.17 $115.76 $385,696,000 SEC
2011   Q4 3,119,601 2.40 Add 0.97% 0.02 $95.68 $298,483,000 SEC
2011   Q3 3,089,601 2.25 Add 2.08% 0.05 $81.67 $252,328,000 SEC
2011   Q2 3,026,501 2.39 Add 4.80% 0.11 $91.19 $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 $72.01 $207,949,000 SEC