TRILLIUM ASSET MANAGEMENT, LLC
SEC Form 13F institutional filer · CIK 0000884541
13F-HR · 153 reported holdings · 2026-03-31
Asset management firm specializing in ESG.
Reported long-US-equity value
$2.33B
Top-10 concentration
43.0%
TRILLIUM ASSET MANAGEMENT, LLC — $2.33B AUM allocation strategy
TRILLIUM ASSET MANAGEMENT, LLC files SEC Form 13F and reports $2.33B of long US equity value across 153 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 27.5%, followed by Communication Services 9.0% and Financials 7.7%.
The top 10 holdings account for 43% 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.
TRILLIUM ASSET MANAGEMENT, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$2.33B
total across 153 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
43% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NVDA +183K sh · −$19.9M+$GOOG +166K sh · −$18.4M+$AAPL +156K sh · −$12.7M
Biggest trims (shares)
−$MKC −119K sh · −$13.6M−$FITB −117K sh · −$4.63M−$LULU −58.5K sh · −$13.6M
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)
- Semiconductors11.0%—
- Systems Software10.5%—
- Interactive Media & Services7.3%—
- Technology Hardware, Storage & Peripherals6.0%—
- Diversified Banks3.6%—
- Apparel Retail2.8%—
- Transaction & Payment Processing Services2.6%—
- Consumer Staples Merchandise Retail2.0%—
- Other holdings54.2%—
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 | 1.46M | $222M | +183K | 9.5% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 760K | $170M | +166K | 7.3% |
| $MSFT | Microsoft Corporation | 582K | $158M | +139K | 6.8% |
| $AAPL | Apple Inc | 705K | $139M | +156K | 6.0% |
| $TJX | TJX Companies Inc | 463K | $64.8M | +57.1K | 2.8% |
| $MA | Mastercard Incorporated | 186K | $61.1M | +61.7K | 2.6% |
| $PANW | Palo Alto Networks Inc | 353K | $52.9M | +60.7K | 2.3% |
| $COST | Costco Wholesale Corporation | 144K | $48.2M | +95.4K | 2.1% |
| $ECL | Ecolab Inc | 199K | $44.6M | +17.4K | 1.9% |
| $PNC | PNC Financial Services Group Inc | 234K | $42.8M | +26.8K | 1.8% |
…and 143 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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