Sienna Gestion
SEC Form 13F institutional filer · CIK 0002021242
13F-HR · 112 reported holdings · 2026-03-31
SEC-registered institutional investment manager.
Reported long-US-equity value
$1.32B
Top-10 concentration
36.6%
Sienna Gestion — $1.32B AUM allocation strategy
Sienna Gestion files SEC Form 13F and reports $1.32B of long US equity value across 112 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 31.2%, followed by Financials 4.7% and Consumer Discretionary 3.9%.
The top 10 holdings account for 37% 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.
Sienna Gestion — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$1.32B
total across 112 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
37% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AAPL +349K sh · +$85.8M+$VZ +120K sh · +$9.23M+$TSLA +71.8K sh · +$25M
Biggest trims (shares)
−$CSCO −140K sh · −$10.6M−$SCHW −134K sh · −$13.5M−$FAST −106K sh · −$4.13M
Exited to nil (held last quarter, gone now)
$AMZN ($66.2M last qtr)$JNJ ($26.7M last qtr)$BLK ($24.6M last qtr)$WBD ($16.6M last qtr)$ETR ($9.1M 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)
- Semiconductors11.6%—
- Technology Hardware, Storage & Peripherals8.5%—
- Systems Software6.3%—
- Automobile Manufacturers2.1%—
- Diversified Banks2.0%—
- Communications Equipment2.0%—
- Gas Utilities1.8%—
- Home Improvement Retail1.7%—
- Other holdings63.8%—
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 | 702K | $117M | +3.33K | 8.9% |
| $AAPL | Apple Inc | 383K | $95M | +349K | 7.2% |
| $MSFT | Microsoft Corporation | 232K | $83.7M | +1.39K | 6.3% |
| $AVGO | Broadcom Inc | 124K | $36.5M | -14.8K | 2.8% |
| $TSLA | Tesla Inc | 79.3K | $28.4M | +71.8K | 2.2% |
| $JPM | JP Morgan Chase & Co | 94.6K | $27M | -44.7K | 2.0% |
| $CSCO | Cisco Systems Inc | 338K | $26.2M | -140K | 2.0% |
| $ATO | Atmos Energy Corporation | 127K | $23.7M | +70.5K | 1.8% |
| $HD | Home Depot Inc | 71.4K | $23.3M | +362 | 1.8% |
| $VZ | Verizon Communications Inc | 431K | $21.8M | +120K | 1.7% |
…and 102 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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