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ESSEX INVESTMENT MANAGEMENT CO LLC

Position in WAB — Westinghouse Air Brake Technologies Corp

CIK 201772 BOSTON, MA

Position in WAB

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$76,472
-$796 QoQ
Shares Held
306
-15.5% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in WAB Over Time

Shares Held

Position Value (USD)

Position in Railroads

Industrials · as of Mar 31, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $2,893,136 across 3 Railroads names. WAB ranks #2 (2.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 WAB
Westinghouse Air Brake Technologies Corp
This page
306 $76,472

All Filings in WAB

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $76,472 306
2025-12-31 $77,268 362
2025-09-30 $72,570 362
2025-06-30 $75,784 362
2025-03-31 $65,648 362
2024-12-31 $68,631 362
2024-09-30 $156,140 859
2024-06-30 $169,745 1,074
2024-03-31 $178,312 1,224
2023-12-31 $217,760 1,716
2023-09-30 $222,423 2,093
2023-06-30 $231,623 2,112
2023-03-31 $213,438 2,112
2022-12-31 $213,293 2,137
2022-09-30 $173,844 2,137
2022-06-30 $175,404 2,137
2022-03-31 $364,388 3,789
2021-12-31 $349,004 3,789
2021-09-30 $328,632 3,812
2021-06-30 $313,727 3,812
2021-03-31 $310,465 3,922
2020-12-31 $287,090 3,922
2020-09-30 $242,693 3,922
2020-06-30 $225,847 3,923
2020-03-31 $238,821 4,962