Linden Thomas Advisory Services, LLC
SEC Form 13F institutional filer · CIK 0001965702
13F-HR · 233 reported holdings · 2026-03-31
Reported long-US-equity value
$0.62B
Top-10 concentration
21.3%
Linden Thomas Advisory Services, LLC — $623M AUM allocation strategy
Linden Thomas Advisory Services, LLC files SEC Form 13F and reports $623M of long US equity value across 233 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 18.7%, followed by Communication Services 6.2% and Health Care 2.3%.
The top 10 holdings account for 21% 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.
Linden Thomas Advisory Services, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$623M
total across 233 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
21% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$TTD +78.5K sh · +$1.36M+$INCY +43.3K sh · +$4.06M+$GOOG +26.4K sh · +$6.77M
Biggest trims (shares)
−$AMCR −103K sh · +$181K−$PLTR −45.6K sh · −$8.86M−$IWM −39.1K sh · −$6.5M
Exited to nil (held last quarter, gone now)
$UNH ($1.54M last qtr)$IR ($1.38M last qtr)$BIIB ($1.28M last qtr)$BKR ($888K last qtr)$ELV ($593K 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)
- Semiconductors7.4%—
- Communications Equipment4.1%—
- Interactive Media & Services4.0%—
- Systems Software2.6%—
- Technology Hardware, Storage & Peripherals2.6%—
- Health Care Equipment1.2%—
- Tobacco1.2%—
- Integrated Oil & Gas1.2%—
- Other holdings75.7%—
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 |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 175K | $30.6M | -12.9K | 4.9% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 59.4K | $17.1M | +26.4K | 2.7% |
| $AAPL | Apple Inc | 63.2K | $16M | -16K | 2.6% |
| $AVGO | Broadcom Inc | 49.8K | $15.4M | +10.6K | 2.5% |
| $ANET | Arista Networks Inc | 106K | $13M | +19.6K | 2.1% |
| $MSFT | Microsoft Corporation | 27.7K | $10.3M | -1.68K | 1.6% |
| $META | Meta Platforms Inc | 13.9K | $7.97M | -9.09K | 1.3% |
| $RMD | ResMed Inc | 34.3K | $7.7M | +1.14K | 1.2% |
| $MO | Altria Group Inc | 110K | $7.28M | +3.73K | 1.2% |
| $XOM | ExxonMobil Holdings Corporation | 42.2K | $7.16M | +2.42K | 1.2% |
…and 223 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
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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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