ALETHEA CAPITAL MANAGEMENT, LLC
CIK
1549408
Location
MERCER ISLAND, WA
Portfolio Value
Small
$133,904,821
Diversification
Highly concentrated
Filing Date
Global Rank
#4,748
/ 8,232
▲ 35
Top Industry
Biotechnology
98.3%
3Y Alpha vs SPY
+18.4%
Period ended 2 months ago
Filed May 13, 2026 · 32d
25 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
+169.8%
SPY
+76.3%
Annualised alpha
+18.4%
Max drawdown
−28.7%
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
10 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
81.9%
−0.3 pts
Top 5
99.4%
−0.6 pts
Top 10
100.0%
0.0 pts
HHI
6,845
Highly concentrated−61
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Healthcare | 92.8% | $124,279,799 |
| Unclassified | 6.6% | $8,903,154 |
| Financial Services | 0.4% | $495,048 |
| Consumer Cyclical | 0.1% | $162,320 |
| Basic Materials | 0.0% | $64,500 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| KURA | Kura Oncology, Inc. | +106,687 | 1,529,369 | $12,433,769 | |
| No positions match the current search. | |||||
Sold Out
Positions the filer fully exitedNo qualifying positions this quarter.
10 positions ·
$133,904,821 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| AXSM |
Axsome Therapeutics, Inc.
Healthcare
|
Reduced | 649,114 | $109,713,248 | 81.93% | |
| KURA |
Kura Oncology, Inc.
Healthcare
|
Added | 1,529,369 | $12,433,769 | 9.29% | |
| SPY |
Spdr S&P 500 ETF Trust
|
Reduced | 13,690 | $8,903,154 | 6.65% | |
| TEM |
Tempus AI, Inc.
Healthcare
|
Held | 31,554 | $1,426,871 | 1.07% | |
| RNA |
Atrium Therapeutics, Inc.
Healthcare
|
NEW | 43,758 | $585,044 | 0.44% | |
| WFC |
Wells Fargo & Company/Mn
Financial Services
|
NEW | 6,030 | $480,048 | 0.36% | |
| GPK |
Graphic Packaging Holding Co
Consumer Cyclical
|
NEW | 16,330 | $162,320 | 0.12% | |
| IMRX |
Immuneering Corp
Healthcare
|
Held | 22,935 | $120,867 | 0.09% | |
| TGB |
Taseko Mines Ltd
Basic Materials
|
Held | 10,000 | $64,500 | 0.05% | |
| LPRO |
Open Lending Corp
Financial Services
|
Held | 12,000 | $15,000 | 0.01% |