VANGUARD PORTFOLIO MANAGEMENT LLC
Position in AMSC — American Superconductor Corp /De/
CIK 2100121
MALVERN, PA
Position in AMSC
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$58,897,003
+$956,737 QoQ
Shares Held
1,418,863
-17.1% QoQ
Ownership
2.93%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#5
of 276 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in AMSC Over Time
Shares Held
Position Value (USD)
Position in Specialty Industrial Machinery
Industrials · as of Jun 30, 2026VANGUARD PORTFOLIO MANAGEMENT LLC holds $43,528,969,689 across 56 Specialty Industrial Machinery names. AMSC ranks #42 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GEV |
GE Vernova Inc.
|
4,723,958 | $5,549,989,295 | |
| 2 | CMI |
Cummins Inc
|
7,534,991 | $5,374,030,931 | |
| 3 | ETN |
Eaton Corp plc
|
9,404,429 | $4,007,415,285 | |
| 4 | ROK |
Rockwell Automation, Inc
|
5,928,262 | $2,934,963,950 | |
| 5 | AME |
Ametek Inc/
|
9,952,184 | $2,407,831,396 | |
| 6 | EMR |
Emerson Electric Co
|
13,312,414 | $1,905,672,064 | |
| 7 | ITW |
Illinois Tool Works Inc
|
6,943,927 | $1,878,123,935 | |
| 8 | PH |
Parker-Hannifin Corp
|
1,847,569 | $1,807,144,190 |
All Filings in AMSC
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $58,897,003 | 1,418,863 | Shares | Defined | 2026-08-13 | |
| 2026-03-31 | $57,940,266 | 1,711,677 | Shares | Defined | 2026-05-08 | |
| No filing history on record for this holder in this stock. | ||||||