TransDigm Group Incorporated
MX ˙ BMV ˙ US8936411003
SecurityMX:TDG / TransDigm Group Incorporated
InstitutionRhumbline Advisers
Latest Disclosed Ownership97,886 shares
Latest Disclosed Value $ 113,445,815
Rhumbline Advisers reports 2.60% decrease in ownership of TDG / TransDigm Group Incorporated

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 97,886 shares of TransDigm Group Incorporated (MX:TDG) valued at $113,445,815 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 100,494 shares of TransDigm Group Incorporated. This represents a change in shares of -2.60% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 97,886 -2,608 -2.60 113,446 -15.11 0.0970
2026-02-13 2025-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 100,494 -803 -0.79 133,642 0.10 0.1080
2025-11-06 2025-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 101,297 -522 -0.51 133,511 -13.77 0.1072
2025-08-12 2025-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 101,819 -38 -0.04 154,830 9.89 0.1326
2025-05-29 2025-03-31 13F/A-1 TRANSDIGM GROUP INC COM COM 893641100 101,857 2,539 2.56 140,898 11.94 0.1318
2025-04-08 2025-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 101,857 2,539 140,898 0.1318
2025-05-29 2024-12-31 13F/A-1 TRANSDIGM GROUP INC COM COM 893641100 99,318 -2,259 -2.22 125,864 -13.18 0.1126
2025-01-30 2024-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 99,318 -2,259 125,864 0.1126
2024-11-12 2024-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 101,577 -1,927 -1.86 144,963 9.62 0.1308
2024-08-01 2024-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 103,504 -3,077 -2.89 132,238 0.74 0.1243
2024-05-09 2024-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 106,581 2,423 2.33 131,265 24.58 0.1261
2024-02-08 2023-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 104,158 -3,435 -3.19 105,366 16.15 0.1104
2023-11-09 2023-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 107,593 4,088 3.95 90,715 -1.98 0.1053
2023-08-08 2023-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 103,505 -428 -0.41 92,551 121,677.63 0.1037
2023-05-11 2023-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 103,933 3,129 3.10 77 -99.88 0.0945
2023-02-14 2022-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 100,804 896 0.90 63,471 21.05 0.0853
2022-11-10 2022-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 99,908 5,595 5.93 52,434 3.59 0.0781
2022-08-11 2022-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 94,313 8,393 9.77 50,615 -9.58 0.0739
2022-05-12 2022-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 85,920 586 0.69 55,980 3.10 0.0721
2022-02-10 2021-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 85,334 1,229 1.46 54,296 3.36 0.0665
2021-11-12 2021-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 84,105 -4,016 -4.56 52,529 -7.91 0.0711
2021-08-05 2021-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 88,121 -2,691 -2.96 57,040 6.84 0.0748
2021-05-06 2021-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 90,812 -3,961 -4.18 53,390 -8.97 0.0725
2021-02-10 2020-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 94,773 1,704 1.83 58,650 32.64 0.0809
2020-11-12 2020-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 93,069 3,589 4.01 44,219 11.79 0.0693
2020-08-13 2020-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 89,480 -597 -0.66 39,555 37.14 0.0661
2020-05-06 2020-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 90,077 5,511 6.52 28,842 -39.10 0.0604
2020-02-05 2019-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 84,566 2,059 2.50 47,357 10.24 0.0792
2019-10-23 2019-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 82,507 -560 -0.67 42,959 6.90 0.0785
2019-08-14 2019-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 83,067 -4,122 -4.73 40,188 1.53 0.0754
2019-05-01 2019-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 87,189 -464 -0.53 39,583 32.80 0.0767
2019-01-31 2018-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 87,653 -1,684 -1.88 29,807 -10.38 0.0649
2018-11-07 2018-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 89,337 -2,723 -2.96 33,260 4.68 0.0642
2018-08-06 2018-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 92,060 -157 -0.17 31,774 12.26 0.0641
2018-05-02 2018-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 92,217 -966 -1.04 28,305 10.61 0.0591
2018-02-09 2017-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 93,183 883 0.96 25,590 8.45 0.0520
2017-11-06 2017-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 92,300 -2,870 -3.02 23,596 -7.78 0.0513
2017-08-02 2017-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 95,170 -7,591 -7.39 25,588 13.10 0.0584
2017-05-02 2017-03-31 13F TRANSDIGM GROUP INC COM COM 893641100 102,761 4,131 4.19 22,624 -7.86 0.0528
2017-01-27 2016-12-31 13F TRANSDIGM GROUP INC COM COM 893641100 98,630 10,437 11.83 24,555 -3.70 0.0622
2016-11-08 2016-09-30 13F TRANSDIGM GROUP INC COM COM 893641100 88,193 493 0.56 25,498 10.26 0.0703
2016-08-11 2016-06-30 13F TRANSDIGM GROUP INC COM COM 893641100 87,700 36,445 71.11 23,126 104.76 0.0685
2016-05-02 2016-03-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 51,255 -731 -1.41 11,294 -4.90 0.0350
2016-02-03 2015-12-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 51,986 679 1.32 11,876 8.97 0.0382
2015-11-04 2015-09-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 51,307 2,054 4.17 10,898 -1.52 0.0371
2015-08-04 2015-06-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 49,253 3,425 7.47 11,066 10.40 0.0353
2015-05-12 2015-03-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 45,828 1,341 3.01 10,024 14.76 0.0289
2015-02-06 2014-12-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 44,487 583 1.33 8,735 7.93 0.0254
2014-11-12 2014-09-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 43,904 -642 -1.44 8,093 8.62 0.0243
2014-08-06 2014-06-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 44,546 -671 -1.48 7,451 -11.02 0.0219
2014-05-06 2014-03-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 45,217 -2,050 -4.34 8,374 10.02 0.0248
2014-02-03 2013-12-31 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 47,267 -5,048 -9.65 7,611 4.89 0.0225
2013-11-05 2013-09-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 52,315 -1,079 -2.02 7,256 -13.32 0.0225
2013-08-07 2013-06-30 13F TRANSDIGM GROUP INC COMMON STO COM 893641100 53,394 53,394 8,371 0.0269
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.