Blair William & Co

SEC CIK: 0000902367
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

TDG holding history

TransDigm Group INC in every 13F filed by Blair William & Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

TDG overview All 13F holders of TDG Full Q2 2026 holdings

Shares (Q2 2026): 164,960
Value: $219.7M
% of portfolio: 0.6%
Quarters held: 22; Since Q1 2021

Holdings of TDG by Blair William & Co, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	164,960	$219.7M	0.6%	−1,288−0.8%	Reduced	Holders
Q1 2026	166,248	$192.7M	0.6%	−3,982−2.3%	Reduced	Holders
Q4 2025	170,230	$226.4M	0.6%	−2,419−1.4%	Reduced	Holders
Q3 2025	172,649	$227.6M	0.6%	−304−0.2%	Reduced	Holders
Q2 2025	172,953	$263.0M	0.7%	−2,268−1.3%	Reduced	Holders
Q1 2025	175,221	$242.4M	0.7%	−3,122−1.8%	Reduced	Holders
Q4 2024	178,343	$226.0M	0.7%	+674+0.4%	Added	Holders
Q3 2024	177,669	$253.6M	0.7%	+285+0.2%	Added	Holders
Q2 2024	177,384	$226.6M	0.7%	+188+0.1%	Added	Holders
Q1 2024	177,196	$218.2M	0.7%	+4,213+2.4%	Added	Holders
Q4 2023	172,983	$175.0M	0.6%	+477+0.3%	Added	Holders
Q3 2023	172,506	$145.4M	0.6%	+1,940+1.1%	Added	Holders
Q2 2023	170,566	$152.5M	0.6%	−448−0.3%	Reduced	Holders
Q1 2023	171,014	$126.0M	0.5%	−4,590−2.6%	Reduced	Holders
Q4 2022	175,604	$110.6M	0.5%	+1,469+0.8%	Added	Holders
Q3 2022	174,135	$91.4M	0.4%	−1,423−0.8%	Reduced	Holders
Q2 2022	175,558	$94.2M	0.4%	+659+0.4%	Added	Holders
Q1 2022	174,899	$114.0M	0.4%	−3,419−1.9%	Reduced	Holders
Q4 2021	178,318	$113.5M	0.4%	−3,232−1.8%	Reduced	Holders
Q3 2021	181,550	$113.4M	0.4%	−1,601−0.9%	Reduced	Holders
Q2 2021	183,151	$118.6M	0.4%	−1,814−1.0%	Reduced	Holders
Q1 2021	184,965	$108.7M	0.4%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.