Granahan Investment Management, LLC
Position in YSS — York Space Systems Inc.
CIK 1026710
WALTHAM, MA
Position in YSS
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$11,526,837
-$9,925,076 QoQ
Shares Held
468,190
-51.6% QoQ
Ownership
0.341%
of shares outstanding
% of Portfolio
0.41%
of 13F equity value
Holder Rank
#23
of 161 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 74%
Shared 0%
None 26%
Common Shares in YSS Over Time
Shares Held
Position Value (USD)
Position in Aerospace & Defense
Industrials · as of Jun 30, 2026Granahan Investment Management, LLC holds $189,781,182 across 9 Aerospace & Defense names. YSS ranks #4 (6.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FTAI |
FTAI Aviation Ltd.
|
293,722 | $79,460,612 | |
| 2 | AXON |
Axon Enterprise, Inc.
|
96,829 | $54,283,305 | |
| 3 | AVAV |
AeroVironment Inc
|
86,783 | $14,325,269 | |
| 4 | YSS |
York Space Systems Inc.
This page
|
468,190 | $11,526,837 | |
| 5 | ARXS |
Arxis, Inc.
|
241,183 | $11,128,183 | |
| 6 | KRMN |
Karman Holdings Inc.
|
144,544 | $7,215,636 | |
| 7 | BETA |
BETA Technologies, Inc.
|
422,493 | $7,076,757 | |
| 8 | BWXT |
BWX Technologies, Inc.
|
18,976 | $3,693,678 |
All Filings in YSS
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $11,526,837 | 468,190 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $21,451,913 | 967,610 | Shares | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||