Rosenbaum Jay D.
CIK
1622820
Location
BOSTON, MA
Portfolio Value
Micro
$6,545,267
Diversification
Highly concentrated
Filing Date
Global Rank
#7,074
/ 7,303
▼ 324
Top Industry
Specialty Industrial Machinery
53.6%
3Y Alpha vs SPY
-24.7%
Period ended 1 year ago
Filed Nov 7, 2024 · 1y
19 quarters · since Mar 2020
Clone Performance
Jun 2023–Jun 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
-11.4%
SPY
+76.3%
Annualised alpha
-24.7%
Max drawdown
−46.3%
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
5 positions · as of Sep 30, 2024 · Δ vs Jun 30, 2024Top Position
53.6%
+23.5 pts
Top 5
100.0%
+42.4 pts
Top 10
100.0%
+26.5 pts
HHI
4,076
Highly concentrated+2,842
Portfolio Trend
19 quarters · across all stocks
Sector Breakdown
As of Sep 30, 2024| Sector | % Portfolio | Value |
|---|---|---|
| Industrials | 53.6% | $3,505,000 |
| Energy | 34.0% | $2,226,000 |
| Technology | 12.4% | $814,267 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| AVGO | Broadcom Inc. | +1,208 | 1,530 | $263,925 | |
| 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
22 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| AMZN | Amazon Com Inc | 4,052 | $783,049 | |
| AAPL | Apple Inc. | 3,191 | $672,088 | |
| GOOGL | Alphabet Inc. | 3,362 | $612,388 | |
| META | Meta Platforms, Inc. | 1,079 | $544,053 | |
| V | Visa Inc. | 1,943 | $509,979 | |
| UNH | Unitedhealth Group Inc | 736 | $374,815 | |
| ADBE | Adobe Inc. | 614 | $341,101 | |
| SCHW | Schwab Charles Corp | 4,567 | $336,542 | |
| BKNG | Booking Holdings Inc. | 82 | $324,843 | |
| TMO | Thermo Fisher Scientific Inc. | 578 | $319,634 | |
| CRM | Salesforce, Inc. | 1,178 | $302,863 | |
| SPGI | S&P Global Inc. | 653 | $291,238 | |
| NEE | Nextera Energy Inc | 4,074 | $288,479 | |
| HQY | Healthequity, Inc. | 3,336 | $287,563 | |
| BX | Blackstone Inc. | 2,238 | $277,064 | |
| WAB | Westinghouse Air Brake Technologies Corp | 1,570 | $248,138 | |
| AXP | American Express Co | 1,063 | $246,137 | |
| WCN | Waste Connections, Inc. | 1,318 | $231,124 | |
| CHTR | Charter Communications, Inc. /Mo/ | 750 | $224,220 | |
| BAH | Booz Allen Hamilton Holding Corp | 1,354 | $208,380 | |
| AMT | American Tower Corp /Ma/ | 1,060 | $206,042 | |
| FTV | Fortive Corp | 2,818 | $157,357 | |
| No positions match the current search. | ||||
5 positions ·
$6,545,267 total
· as of Sep 30, 2024
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| NPWR |
NET Power Inc.
Industrials
|
Held | 500,000 | $3,505,000 | 53.55% | |
| CRK |
Comstock Resources Inc
Energy
|
Held | 200,000 | $2,226,000 | 34.01% | |
| NVDA |
Nvidia Corp
Technology
|
Reduced | 2,420 | $293,884 | 4.49% | |
| AVGO |
Broadcom Inc.
Technology
|
Added | 1,530 | $263,925 | 4.03% | |
| MSFT |
Microsoft Corp
Technology
|
Reduced | 596 | $256,458 | 3.92% |