First Long Island Investors, LLC
SEC Form 13F institutional filer · CIK 0001490429
13F-HR · 62 reported holdings · 2026-03-31
SEC-registered institutional investment manager.
Reported long-US-equity value
$1.15B
Top-10 concentration
42.3%
First Long Island Investors, LLC — $1.15B AUM allocation strategy
First Long Island Investors, LLC files SEC Form 13F and reports $1.15B of long US equity value across 62 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 20.1%, followed by Health Care 13.7% and Consumer Discretionary 10.2%.
The top 10 holdings account for 42% 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.
First Long Island Investors, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$1.15B
total across 62 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
42% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$APH +104K sh · +$10.9M+$UBER +47K sh · +$1.09M+$AAPL +42.1K sh · +$9.39M
Biggest trims (shares)
−$ADP −82.3K sh · −$27.1M−$NFLX −63.9K sh · −$5.76M−$ABT −44K sh · −$14.2M
Exited to nil (held last quarter, gone now)
$ACN ($17M last qtr)$ADBE ($16.6M last qtr)$DIS ($13.8M last qtr)$MDLZ ($12.4M last qtr)$IVV ($1.27M 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)
- Semiconductors8.5%—
- Interactive Media & Services6.8%—
- Transaction & Payment Processing Services6.6%—
- Pharmaceuticals5.9%—
- Systems Software5.1%—
- Broadline Retail5.0%—
- Industrial Machinery & Supplies & Components4.7%—
- Biotechnology4.4%—
- Other holdings53.0%—
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 | 346K | $60.4M | -993 | 5.3% |
| $MSFT | Microsoft Corporation | 160K | $59.2M | -920 | 5.2% |
| $AMZN | Amazon.com Inc | 275K | $57.2M | -12.2K | 5.0% |
| $PH | Parker-Hannifin Corporation | 60K | $53.8M | -484 | 4.7% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 174K | $50.1M | -8.58K | 4.4% |
| $APH | Amphenol Corporation | 361K | $45.6M | +104K | 4.0% |
| $V | Visa Inc | 143K | $43.2M | +39.2K | 3.8% |
| $LLY | Eli Lilly and Company | 44.1K | $40.5M | -153 | 3.5% |
| $ABT | Abbott Laboratories | 382K | $39.2M | -44K | 3.4% |
| $AVGO | Broadcom Inc | 119K | $36.9M | -323 | 3.2% |
…and 52 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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