SEI INVESTMENTS CO
SEC Form 13F institutional filer · CIK 0000350894
13F-HR · 508 reported holdings · 2026-03-31
Financial services firm, provides investment management and technology.
Reported long-US-equity value
$67.10B
Top-10 concentration
35.4%
SEI INVESTMENTS CO — $67.1B AUM allocation strategy
SEI INVESTMENTS CO files SEC Form 13F and reports $67.1B of long US equity value across 508 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 16.1%, followed by Financials 9.1% and Communication Services 6.8%.
The top 10 holdings account for 35% 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.
SEI INVESTMENTS CO — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$67.1B
total across 508 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
35% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$SCHW +4.99M sh · +$14.3M+$T +2.53M sh · +$105M+$NVDA +2.45M sh · +$194M
Biggest trims (shares)
−$VOO −3.89M sh · −$176M−$IVZ −3.29M sh · −$69.5M−$AMCR −2.68M sh · −$3.19M
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)
- Semiconductors8.0%—
- Investment Banking & Brokerage6.8%—
- Interactive Media & Services6.0%—
- Technology Hardware, Storage & Peripherals4.3%—
- Systems Software3.9%—
- Broadline Retail3.3%—
- Pharmaceuticals1.8%—
- Transaction & Payment Processing Services1.8%—
- Other holdings64.3%—
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
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $SCHW | Charles Schwab Corporation | 155M | $4.55B | +4.99M | 6.8% |
| $NVDA | NVIDIA Corporation | 21.7M | $3.78B | +2.45M | 5.6% |
| $AAPL | Apple Inc | 11.3M | $2.86B | +1.82M | 4.3% |
| $MSFT | Microsoft Corporation | 7M | $2.59B | -111K | 3.9% |
| $AMZN | Amazon.com Inc | 10.5M | $2.19B | +975K | 3.3% |
| $GOOGL | Alphabet Inc | 5.86M | $1.68B | +1.33M | 2.5% |
| $AVGO | Broadcom Inc | 5.08M | $1.57B | +962K | 2.3% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 4.17M | $1.2B | +333K | 1.8% |
| $META | Meta Platforms Inc | 2.1M | $1.14B | +385K | 1.7% |
…and 499 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.
Newsletter signup
Free subscription. Daily trading day morning dispatch. No spam.