SECTORAL ASSET MANAGEMENT INC
SEC Form 13F institutional filer · CIK 0001274413
13F-HR · 25 reported holdings · 2026-03-31
Reported long-US-equity value
$0.05B
Top-10 concentration
65.4%
SECTORAL ASSET MANAGEMENT INC — $54.8M AUM allocation strategy
SECTORAL ASSET MANAGEMENT INC files SEC Form 13F and reports $54.8M of long US equity value across 25 reported holdings for 2026-03-31.
Its largest sector bet is Health Care 95.6%.
The top 10 holdings account for 65% 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.
SECTORAL ASSET MANAGEMENT INC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$54.8M
total across 25 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
65% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$GILD +9.61K sh · +$1.94M+$BSX +7.15K sh · −$452K+$ABT +2.08K sh · −$318K
Biggest trims (shares)
−$DXCM −5.47K sh · −$446K−$ABBV −4.6K sh · −$1.19M−$AMGN −3.86K sh · −$763K
Exited to nil (held last quarter, gone now)
None this quarter
Sector allocation (share of reported value)
- $XLVHealth Care95.6%—
- Other holdings4.4%—
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)
- Biotechnology29.6%—
- Pharmaceuticals25.8%—
- Health Care Equipment23.7%—
- Life Sciences Tools & Services9.1%—
- Managed Health Care7.4%—
- Other holdings4.4%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $LLY | Eli Lilly and Company | 6.35K | $5.84M | -922 | 10.7% |
| $JNJ | Johnson & Johnson | 18.2K | $4.45M | -2.08K | 8.1% |
| $GILD | Gilead Sciences Inc | 27.5K | $4.13M | +9.61K | 7.5% |
| $UNH | UnitedHealth Group Incorporated | 15K | $4.05M | +1.36K | 7.4% |
| $AMGN | Amgen Inc | 9.21K | $3.51M | -3.86K | 6.4% |
| $VRTX | Vertex Pharmaceuticals Incorporated | 7.01K | $3.46M | -998 | 6.3% |
| $ABBV | AbbVie Inc | 12.2K | $2.65M | -4.6K | 4.8% |
| $ABT | Abbott Laboratories | 25.6K | $2.63M | +2.08K | 4.8% |
| $MRK | Merck & Company Inc | 21.5K | $2.58M | +80 | 4.7% |
| $REGN | Regeneron Pharmaceuticals Inc | 2.92K | $2.48M | -796 | 4.5% |
…and 15 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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