Rendity gives you complete portfolio analytics for your Interactive Brokers account:
IRR, income attribution, options planning, benchmark comparisons, and German tax reports.
Check in once a month. Stay informed all year.
The best investment strategy is one you can stick with. Rendity helps you understand
exactly how your portfolio is performing, so you can spend your time
on research, not spreadsheets.
%
True IRR per stock
Money-weighted internal rate of return that accounts for the timing of every deposit, withdrawal, and trade. Per-stock and portfolio-wide.
$
Income attribution
Four income buckets per stock: price gains, option premiums, dividends, and interest. See where your returns actually come from.
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Options planner
Cash committed to puts, covered call availability per position, and premium income attributed to each underlying. A complete options command center.
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Benchmark comparison
Time-weighted returns plotted against SPY, QQQ, VOO, or any ticker. See how your portfolio stacks up over any time range.
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Performance heatmap
Months and years at a glance. Instantly spot your strongest and weakest periods with color-coded performance data.
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German tax report
Anlage KAP fields computed automatically with loss offsetting pools and transaction-level drill-down. Tax season, handled.
Spotlight
An options command center for your portfolio.
Know your cash exposure, see which positions can write covered calls,
and track premium income. All in one view.
Cash & Exposure at a Glance
Instantly see your free cash after accounting for put commitments.
$48,210
Cash balance
$18,500
Committed to puts
$29,710
Free cash
Covered Call Availability
Positions sorted by call-writing capacity. See cost basis, shares held, contracts committed, and available lots.
Tickervs CostSharesCan Write
AAPL+24.3%500 1C4
MSFT+18.7%3003
JNJ-2.1%200 1C1
KO+8.5%100 1C0
PG+12.0%500
In practice
Built for investors who value their time.
Great businesses compound quietly. Rendity gives you the full picture
so you can check in with confidence and get back to what matters.
Dashboard
Portfolio value, cash balance, unrealised P&L, and IRR. The numbers that matter, all in one glance.
€247,382
Portfolio value
+18.4%
Portfolio IRR
+€12,891
Unrealised P&L
+14.2%
SPY benchmark
Monthly Returns
Stacked income by source: gains, premiums, dividends, interest.
Performance Heatmap
Years × months. Spot patterns at a glance.
Benchmark Comparison
Your time-weighted return alongside SPY, QQQ, or any ticker.
Income Breakdown
Per-stock attribution across four income sources.
Price gains 38%
Option premiums 25%
Dividends 22%
Interest 15%
Stock Deep Dive
Full transaction history per ticker with chart overlays showing execution prices and position size over time.
BUYSELLOPTIONDIVIDENDASSIGNED
Anlage KAP
German tax form fields, loss-offset pools, and EUR-converted amounts. Computed from your IBKR transactions with full drill-down.
Setup
Three steps. Five minutes.
1
Connect IBKR
Enter your Flex Query token. Read-only access: Rendity never places trades or moves money.
2
Sync your history
Full backfill pulls every transaction from account opening. Incremental sync keeps it current.
3
See the full picture
Dashboard, returns, comparisons, and tax reports. All computed from your actual data, updated whenever you want.
Your data stays yours.
Rendity is self-hosted. Your credentials are encrypted at rest.
The IBKR connection is read-only: it can see your history, never touch your positions.
No third-party analytics. No tracking. No cloud dependency.
✓ Read-only IBKR access✓ Encrypted credentials✓ No tracking
Under the hood
Built with boring, reliable tech.
Server-rendered HTML that loads fast and works everywhere.