JANE STREET GROUP, LLC
SEC Form 13F institutional filer · CIK 0001595888
13F-HR · 503 reported holdings · 2026-03-31
Proprietary trading firm and market maker.
Reported long-US-equity value
$51.84B
Top-10 concentration
45.0%
JANE STREET GROUP, LLC — $51.8B AUM allocation strategy
JANE STREET GROUP, LLC files SEC Form 13F and reports $51.8B of long US equity value across 503 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 16.1%, followed by Financials 2.9% and Communication Services 2.9%.
The top 10 holdings account for 45% 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.
JANE STREET GROUP, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$51.8B
total across 503 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
45% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AMAT +12.6M sh · +$328M+$SPGI +11.2M sh · +$518M+$SPY +10.3M sh · +$6.39B
Biggest trims (shares)
−$WMT −10.5M sh · −$1.17B−$T −7.98M sh · −$197M−$NVDA −7.04M sh · −$1.33B
Exited to nil (held last quarter, gone now)
$MRSH ($70.1M last qtr)$RVTY ($63.3M last qtr)$CCI ($28.6M last qtr)$BLDR ($21.2M last qtr)$PSKY ($7.02M 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)
- Semiconductors5.9%—
- Technology Hardware, Storage & Peripherals4.1%—
- Application Software3.8%—
- Wireless Telecommunication Services1.8%—
- Broadline Retail1.8%—
- Financial Exchanges & Data1.5%—
- Asset Management & Custody Banks1.4%—
- Communications Equipment1.3%—
- Other holdings78.4%—
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
7 of 7 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $AVGO | Broadcom Inc | 4.68M | $1.45B | +462K | 2.8% |
| $PLTR | Palantir Technologies Inc | 9.16M | $1.34B | +4.06M | 2.6% |
| $SNDK | Sandisk Corporation | 1.79M | $1.14B | +941K | 2.2% |
| $DELL | Dell Technologies Inc | 6.1M | $1B | +5.29M | 1.9% |
| $MRVL | Marvell Technology Inc | 9.95M | $986M | +2.12M | 1.9% |
| $TMUS | T-Mobile US Inc | 4.47M | $938M | +3.13M | 1.8% |
| $AMZN | Amazon.com Inc | 4.39M | $914M | +453K | 1.8% |
…and 496 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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