Millstreet Capital Management LLC
CIK
1590729
Location
BOSTON, MA
Portfolio Value
Small
$417,585,397
Diversification
Highly concentrated
Filing Date
Global Rank
#2,874
/ 8,603
▼ 15
· as of Mar 2026
Top Industry
Software - Application
94.2%
3Y Alpha vs SPY
+25.4%
Period ended 3 months ago
Filed May 15, 2026 · 55d
10 quarters · since Dec 2023
Clone Performance
Feb 2024–Jul 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
+143.6%
SPY
+53.6%
Annualised alpha
+25.4%
Max drawdown
−25.7%
Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.
Portfolio Concentration
2 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
94.2%
+5.8 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
8,915
Highly concentrated+1,018
Portfolio Trend
10 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 94.2% | $393,545,735 |
| Energy | 5.8% | $24,039,662 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increasedNo qualifying positions this quarter.
Trimmed
Positions the filer reduced
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| DBD | DIEBOLD NIXDORF, Inc | −500,000 | 5,216,672 | $393,545,735 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarterNo qualifying positions this quarter.
Sold Out
Positions the filer fully exited
1 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| CPS | Cooper-Standard Holdings Inc. | 931,971 | $30,596,607 | |
| No positions match the current search. | ||||
2 positions ·
$417,585,397 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| DBD |
DIEBOLD NIXDORF, Inc
Technology
|
Reduced | 5,216,672 | $393,545,735 | 94.24% | |
| DEC |
Diversified Energy Co
Energy
|
Held | 1,378,421 | $24,039,662 | 5.76% |