ADAR1 Capital Management, LLC
SEC Form 13F institutional filer · CIK 0001940272
13F-HR · 18 reported holdings · 2026-03-31
Reported long-US-equity value
$0.09B
Top-10 concentration
94.5%
ADAR1 Capital Management, LLC — $93.7M AUM allocation strategy
ADAR1 Capital Management, LLC files SEC Form 13F and reports $93.7M of long US equity value across 18 reported holdings for 2026-03-31.
Its largest sector bet is Health Care 39.7%, followed by Financials 6.1% and Real Estate 1.0%.
The top 10 holdings account for 94% of reported value — a conviction-weighted book concentrated in its best ideas. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
ADAR1 Capital Management, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$93.7M
total across 18 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
94% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$SPY +21.3K sh · −$25.2M+$DHR +5.33K sh · −$5.86M+$PFE +5K sh · −$1.43M
Biggest trims (shares)
−$BIIB −13.3K sh · −$6.54M−$MRK −6.5K sh · −$1.65M−$BMY −2.5K sh · −$1.1M
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Biotechnology20.3%—
- Pharmaceuticals8.8%—
- Life Sciences Tools & Services6.3%—
- Asset Management & Custody Banks6.1%—
- Managed Health Care1.6%—
- Health Care Equipment1.6%—
- Health Care Distributors1.1%—
- Office REITs1.0%—
- Other holdings53.2%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $REGN | Regeneron Pharmaceuticals Inc | 12.2K | $9.39M | +103 | 10.0% |
| $VRTX | Vertex Pharmaceuticals Incorporated | 15.1K | $6.73M | +1.36K | 7.2% |
| $DHR | Danaher Corporation | 30.9K | $5.86M | +5.33K | 6.3% |
| $BNY | The Bank of New York Mellon Corporation | 25K | $5.72M | -300 | 6.1% |
| $LLY | Eli Lilly and Company | 5.06K | $4.65M | — | 5.0% |
| $PFE | Pfizer Inc | 77.4K | $2.17M | +5K | 2.3% |
| $BIIB | Biogen Inc | 11K | $2.02M | -13.3K | 2.2% |
| $UNH | UnitedHealth Group Incorporated | 5.5K | $1.49M | — | 1.6% |
| $BMY | Bristol-Myers Squibb Company | 17.5K | $1.06M | -2.5K | 1.1% |
…and 9 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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