ION Fund Management Ltd
SEC Form 13F institutional filer · CIK 0002105906
13F-HR · 17 reported holdings · 2026-03-31
Reported long-US-equity value
$0.06B
Top-10 concentration
90.1%
ION Fund Management Ltd — $64M AUM allocation strategy
ION Fund Management Ltd files SEC Form 13F and reports $64M of long US equity value across 17 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 62.8%, followed by Financials 13.8% and Energy 8.9%.
The top 10 holdings account for 90% of reported value — a conviction-weighted book concentrated in its best ideas. 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.
ION Fund Management Ltd — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$64M
total across 17 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
90% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$Q +17.3K sh · +$8.89M+$SLB +8.47K sh · +$748K+$HAL +5.72K sh · +$613K
Biggest trims (shares)
−$XYZ −100K sh · −$6.9M−$CIEN −48.3K sh · −$7.03M−$IBKR −30K sh · −$1.82M
Exited to nil (held last quarter, gone now)
$CSGP ($31M last qtr)$DD ($18.1M last qtr)$META ($3.96M last qtr)$MSFT ($3.87M last qtr)$CMI ($1.57M 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)
- Semiconductor Materials & Equipment40.0%—
- Communications Equipment18.8%—
- Transaction & Payment Processing Services9.6%—
- Broadline Retail7.8%—
- Oil & Gas Equipment & Services5.2%—
- Investment Banking & Brokerage4.2%—
- Systems Software4.0%—
- Integrated Oil & Gas2.5%—
- Other holdings7.9%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $Q | Qnity Electronics Inc | 222K | $25.6M | +17.3K | 40.0% |
| $CIEN | Ciena Corporation | 27.7K | $10.7M | -48.3K | 16.8% |
| $AMZN | Amazon.com Inc | 24K | $5M | +4K | 7.8% |
| $XYZ | Block Inc | 80K | $4.81M | -100K | 7.5% |
| $IBKR | Interactive Brokers Group Inc | 40K | $2.68M | -30K | 4.2% |
| $PANW | Palo Alto Networks Inc | 16K | $2.57M | +0 | 4.0% |
| $SLB | SLB Limited | 32.5K | $1.67M | +8.47K | 2.6% |
| $HAL | Halliburton Company | 42K | $1.64M | +5.72K | 2.6% |
| $XOM | ExxonMobil Holdings Corporation | 9.36K | $1.59M | +1.07K | 2.5% |
| $PYPL | PayPal Holdings Inc | 30K | $1.36M | — | 2.1% |
…and 7 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.