Assenagon Asset Management S.A.
SEC Form 13F institutional filer · CIK 0001546007
13F-HR · 458 reported holdings · 2026-03-31
Asset management firm, subsidiary of Assenagon.
Reported long-US-equity value
$52.86B
Top-10 concentration
48.6%
Assenagon Asset Management S.A. — $52.9B AUM allocation strategy
Assenagon Asset Management S.A. files SEC Form 13F and reports $52.9B of long US equity value across 458 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 29.4%, followed by Consumer Discretionary 10.9% and Communication Services 9.0%.
The top 10 holdings account for 49% of reported value — a broadly spread portfolio. 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.
Assenagon Asset Management S.A. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$52.9B
total across 458 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
49% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$BSX +5.75M sh · +$221M+$PFE +4.01M sh · +$119M+$ABT +3.33M sh · +$317M
Biggest trims (shares)
−$SLB −5.76M sh · −$219M−$PG −3.42M sh · −$487M−$KO −3.01M sh · −$199M
Exited to nil (held last quarter, gone now)
$CINF ($21.3M last qtr)$JKHY ($7.15M last qtr)$OMC ($6.89M last qtr)$APA ($5.16M last qtr)$GEN ($5M last qtr)
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)
- Systems Software9.6%—
- Semiconductors9.5%—
- Broadline Retail8.1%—
- Technology Hardware, Storage & Peripherals7.9%—
- Interactive Media & Services7.6%—
- Health Care Equipment3.6%—
- Automobile Manufacturers2.8%—
- Pharmaceuticals2.7%—
- Other holdings48.3%—
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 |
|---|---|---|---|---|---|
| $MSFT | Microsoft Corporation | 13.6M | $5.05B | +2.89M | 9.6% |
| $AMZN | Amazon.com Inc | 20.5M | $4.27B | +216K | 8.1% |
| $AAPL | Apple Inc | 16.5M | $4.2B | -2.31M | 7.9% |
| $NVDA | NVIDIA Corporation | 20.5M | $3.57B | -401K | 6.8% |
| $GOOGL | Alphabet Inc | 8.95M | $2.57B | +2.24M | 4.9% |
| $TSLA | Tesla Inc | 3.94M | $1.46B | +1.73M | 2.8% |
| $LLY | Eli Lilly and Company | 1.55M | $1.43B | +1.21M | 2.7% |
| $BRK.B | Berkshire Hathaway Inc.-Class B | 2.31M | $1.11B | +527K | 2.1% |
| $CVX | Chevron Corporation | 5.15M | $1.07B | +2.94M | 2.0% |
| $AMD | Advanced Micro Devices Inc | 4.71M | $959M | -1.28M | 1.8% |
…and 448 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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