YSS — York Space Systems Inc.

US Industrials Defense equity mkt cap 1.3B
9.32 +1.30% today
USD · as of 2026-08-21

Price · 2026-01-29 → 2026-08-21

142 daily closes shown
52w low 9.20 · high 43.45

Anonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2026-01-29.

Performance

1 day+1.30%
1 week-14.73%
1 month-47.11%
3 months-67.24%
6 months-64.03%
Year to date-72.27%

Technicals

RSI 1426.1
vs 50-day avg-51.43%
Max drawdown 1y-78.83%
Avg volume 30d2.7M
Daily bars held142
History from2026-01-29

Measured signals that fired on YSS

datesignal measured base rate
2026-08-11Equal lows taken out
structure
-0.64% over 21 days · t = -4.75 · n = 55,661
statistically distinguishable from its control group
2026-08-06Fair value gap, bearish
structure
-0.45% over 21 days · t = -3.29 · n = 108,591
statistically distinguishable from its control group
2026-07-30Fair value gap, bearish
structure
-0.45% over 21 days · t = -3.29 · n = 108,591
statistically distinguishable from its control group
2026-07-06Equal lows taken out
structure
-0.64% over 21 days · t = -4.75 · n = 55,661
statistically distinguishable from its control group
2026-05-27Fair value gap, bullish
structure
-0.67% over 21 days · t = -6.43 · n = 111,973
statistically distinguishable from its control group
2026-04-24Fair value gap, bearish
structure
-0.45% over 21 days · t = -3.29 · n = 108,591
statistically distinguishable from its control group

Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →

Insider transactions (Form 4)

dateinsiderwhatshares pricevalue
2026-08-07BlackRock Portfolio Management LLC
10% owner
Open-market sale200.2K10.992.2M
2026-08-06BlackRock Portfolio Management LLC
10% owner
Open-market sale201.5K11.602.3M
2026-08-05BlackRock Portfolio Management LLC
10% owner
Open-market sale116.2K13.491.6M
2026-08-05BlackRock Portfolio Management LLC
10% owner
Open-market sale116.2K13.491.6M
2026-08-05BlackRock Portfolio Management LLC
10% owner
Open-market sale11.9K15.28181.6K
2026-08-05BlackRock Portfolio Management LLC
10% owner
Open-market sale11.8K15.28180.1K
2026-08-04BlackRock Portfolio Management LLC
10% owner
Open-market sale468.5K15.587.3M
2026-08-04BlackRock Portfolio Management LLC
10% owner
Open-market sale456.3K15.587.1M
2026-08-04BlackRock Portfolio Management LLC
10% owner
Open-market sale78.1K15.021.2M
2026-08-04BlackRock Portfolio Management LLC
10% owner
Open-market sale77.7K15.021.2M

Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →

Largest institutional holders

managervalueshares
BlackRock, Inc.421.5M19.0M
AE INDUSTRIAL PARTNERS, LP250.5M11.3M
Allianz Asset Management GmbH60.5M2.7M
Bank of New York Mellon Corp37.3M1.7M
Clearbridge Investments, LLC29.8M1.3M
WELLINGTON MANAGEMENT GROUP LLP29.4M1.3M
VOYA INVESTMENT MANAGEMENT LLC23.9M1.1M
UBS Group AG23.4M1.1M
Hood River Capital Management LLC21.9M988.5K
Granahan Investment Management, LLC21.5M967.6K

13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →

Latest SEC filings

formfiledperiod
SCHEDULE 13G/A2026-08-14on EDGAR ↗
10-Q2026-08-142026-06-30on EDGAR ↗
8-K2026-08-132026-08-13on EDGAR ↗
42026-08-102026-08-06on EDGAR ↗
4/A2026-08-102026-08-04on EDGAR ↗
42026-08-062026-08-04on EDGAR ↗
8-K2026-08-052026-07-30on EDGAR ↗
42026-08-042026-07-31on EDGAR ↗

Short selling

Avg short volume, 90d60.9% of tape
Days observed61

This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →

Ask the AI about YSS

The assistant reads every block on this page — price history, filings, insider transactions, institutional positions, short volume, macro and the measured base rates — and says what it implies, quoting the number behind each claim and declaring what it does not have.

Open YSS in the terminal → How the AI works

Everything on this page is live in the terminal.

Charts, filings, insider flow and the AI — open without an account.

Free plan for good. Pro is $69.99/mo, or $4.99 for a 7-day trial. See the plans →