Gruss & Co., LLC
SEC Form 13F institutional filer · CIK 0001103738
13F-HR · 15 reported holdings · 2026-03-31
Reported long-US-equity value
$0.01B
Top-10 concentration
86.9%
Gruss & Co., LLC — $9.79M AUM allocation strategy
Gruss & Co., LLC files SEC Form 13F and reports $9.79M of long US equity value across 15 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 39.6%, followed by Consumer Discretionary 19.3% and Communication Services 15.3%.
The top 10 holdings account for 87% 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.
Gruss & Co., LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$9.79M
total across 15 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
87% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$AMZN −5K sh · −$1.33M−$MSFT −1K sh · −$1.05M−$NVDA −500 sh · −$160K
Exited to nil (held last quarter, gone now)
$WBD ($1.08M last qtr)$GEV ($327K last qtr)$XLU ($213K 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 Software18.9%—
- Broadline Retail17.0%—
- Interactive Media & Services13.2%—
- Technology Hardware, Storage & Peripherals10.9%—
- Semiconductors9.8%—
- Oil & Gas Exploration & Production6.0%—
- Diversified Banks4.5%—
- Passenger Ground Transportation3.3%—
- Other holdings16.4%—
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
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $MSFT | Microsoft Corporation | 5K | $1.85M | -1K | 18.9% |
| $AMZN | Amazon.com Inc | 8K | $1.67M | -5K | 17.0% |
| $AAPL | Apple Inc | 4.2K | $1.07M | +1.5K | 10.9% |
| $NVDA | NVIDIA Corporation | 5.5K | $959K | -500 | 9.8% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 2.5K | $719K | — | 7.3% |
| $META | Meta Platforms Inc | 1K | $572K | -500 | 5.8% |
| $JPM | JP Morgan Chase & Co | 1.5K | $441K | +500 | 4.5% |
| $EXE | Expand Energy Corporation | 3K | $329K | — | 3.4% |
…and 7 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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