Walleye Trading LLC
SEC Form 13F institutional filer · CIK 0001388391
13F-HR · 303 reported holdings · 2026-03-31
SEC-registered institutional investment manager.
Reported long-US-equity value
$3.28B
Top-10 concentration
43.4%
Walleye Trading LLC — $3.28B AUM allocation strategy
Walleye Trading LLC files SEC Form 13F and reports $3.28B of long US equity value across 303 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 15.8%, followed by Communication Services 13.0% and Health Care 8.6%.
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.
Walleye Trading LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$3.28B
total across 303 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
43% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$GOOG +857K sh · +$238M+$INTC +703K sh · +$59.1M+$PYPL +347K sh · +$11.1M
Biggest trims (shares)
−$CSX −1.95M sh · −$69.9M−$CNC −1.11M sh · −$56.7M−$CMCSA −987K sh · −$29.5M
Exited to nil (held last quarter, gone now)
$UNH ($239M last qtr)$SPY ($127M last qtr)$ECHO ($49.6M last qtr)$TMUS ($32.3M last qtr)$TMO ($30.2M 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)
- Interactive Media & Services13.0%—
- Semiconductors8.0%—
- Health Care Services4.9%—
- Systems Software4.2%—
- Pharmaceuticals2.4%—
- Broadline Retail2.3%—
- Apparel, Accessories & Luxury Goods2.1%—
- Electrical Components & Equipment2.1%—
- Other holdings60.9%—
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 |
|---|---|---|---|---|---|
| $GOOG | Alphabet Inc. Class C Capital Stock | 1.19M | $341M | +857K | 10.4% |
| $INTC | Intel Corporation | 6.44M | $263M | +703K | 8.0% |
| $CI | The Cigna Group | 599K | $160M | +84.4K | 4.9% |
| $MSFT | Microsoft Corporation | 279K | $103M | +199K | 3.1% |
| $META | Meta Platforms Inc | 150K | $85.5M | +87.1K | 2.6% |
| $ZTS | Zoetis Inc | 673K | $79.5M | +143K | 2.4% |
| $AMZN | Amazon.com Inc | 366K | $76.2M | +214K | 2.3% |
| $VRT | Vertiv Holdings LLC | 276K | $69.1M | — | 2.1% |
…and 295 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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