AMSC US Equity

American Superconductor Corp /de/

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Information Technology · Motors & Generators · CIK 880807 · FY ends Mar 31

$30.01

-0.04 (-0.13%)

USD · as of 2026-08-21 · marketstack

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8-K & ownership events Filings index (FLNG)

Documents (DOC)Legal & controls (LGCT)

Documents

6 of 7 10-Ks readable here

Period end	Filed	Form	Read here	EDGAR
2026-03-31	2026-05-27	10-K	read · risk factors · MD&A	index · original · 0001437749-26-018542
2025-03-31	2025-05-21	10-K	read · risk factors · MD&A	index · original · 0001437749-25-017986
2024-03-31	2024-05-29	10-K	read · risk factors · MD&A	index · original · 0001437749-24-018602
2023-03-31	2023-05-31	10-K	read · risk factors · MD&A	index · original · 0001437749-23-016265
2022-03-31	2022-06-01	10-K	read · risk factors · MD&A	index · original · 0001437749-22-014035
2021-03-31	2021-06-02	10-K	read · risk factors · MD&A	index · original · 0001437749-21-013956

▾Risk registerwhich risk-factor headings appeared in which year

43 captions · 6 filings

Descriptive and within-name: this is what changed in the wording of one firm's own filings.

43 captions across 6 filings6 added6 dropped30 in every year6 of 7 10-Ks on file are cached here

2021	2022	2023	2024	2025	2026	Years
·	·	·	·	·	●	1
·	·	·	·	·	●	1
·	·	·	·	·	●	1
·	·	·	●	●	●	3
·	·	●	●	●	●	4
·	●	●	●	●	●	5 rw
·	●	●	·	·	·	2
●	●	●	●	●	·	5
●	●	●	●	●	·	5 rw
●	●	●	·	·	·	3 rw
●	·	·	·	·	·	1
●	●	●	●	●	·	5 rw
●	●	●	●	·	●	5
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6 rw
●	●	●	●	●	●	6
●	●	●	●	●	●	6
●	●	●	●	●	●	6

Risk-factor caption

2021

2022

2023

2024

2025

2026

Years

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5 rw

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5 rw

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3 rw

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5 rw

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6 rw

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6 rw

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6 rw

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6 rw

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6 rw

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6 rw

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6 rw

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The filer's own 10-K text · 6 filings read

Rows are the filing's own headings, verbatim — nothing is summarized or generated.

A blank cell means the filer did not print that heading that year — not that the risk ended.

Gates: 5+ captions · 50% of Item 1A · match at Jaccard 0.6.

▾Filing languagedocument length, negation and hedging — chart it against price on GRAPH

6 filings measured

Descriptive and within-name: this is what changed in the wording of one firm's own filings.

Filed	Period end	Document words	Item 1A words	Negation / 10k	Hedging / 10k	Filing
2021-06-02	2021-03-31	42,254	9,070	66.5	166.37	read · EDGAR ↗
2022-06-01	2022-03-31	39,225	9,398	65.52	171.32	read · EDGAR ↗
2023-05-31	2023-03-31	39,813	9,972	63.55	178.33	read · EDGAR ↗
2024-05-29	2024-03-31	39,450	10,200	63.12	179.72	read · EDGAR ↗
2025-05-21	2025-03-31	41,451	10,406	64.65	168.63	read · EDGAR ↗
2026-05-27	2026-03-31	47,123	11,526	61.33	161.7	read · EDGAR ↗

plot against the price on GRAPH: Document length · Item 1A length · Negation per 10k words · Hedging per 10k words

The filer's own 10-K text · 6 filings measured

House wordlists, not a licensed dictionary and not tuned against returns.

9 negation words · 40 hedging words — hover to read both lists.

Each point sits at its filing date and is held flat until the next filing.

AMSC US Equity☆

Documents

▾Risk registerwhich risk-factor headings appeared in which year

▾Filing languagedocument length, negation and hedging — chart it against price on GRAPH

AMSC US Equity