Loan-to-Invest Calculator
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Compare borrowing a lump sum to invest at once against dollar-cost averaging — see the break-even return rate and the gap in annualized returns.
00631L is Taiwan's largest leveraged ETF, tracking 2× the *daily* return of the Taiwan 50 index. Whether holding it long term is an accelerator or a volatility grinder has been argued about for a decade — this page loads its actual leverage and fund costs into the simulator and lets the numbers talk.
Compare how much of a leveraged ETF to hold versus its plain 1× index — five splits from all-leverage to all-index, rebalanced monthly, quarterly or yearly. See CAGR, drawdown and risk-adjusted return, volatility decay included.
Underlying index
Leverage & rebalancing
The tool compares five fixed splits — 100/0, 75/25, 50/50, 25/75, 0/100 — of this leveraged fund and its plain 1× index, all rebalanced yearly.
Capital & horizon
Strategy comparison
Each column is a split between the 2× fund and its plain 1× index (leveraged % / index %), rebalanced yearly. Effective exposure = leveraged share × 2 + index share × 1 (shown under each split); 0/100 is the plain 1× index.
Median growth by strategy
Based on 500 simulated paths with daily-reset leverage. A simplified lognormal model, not a forecast: real markets have fatter tails, jumps, and shifting volatility, all of which hit leverage harder. Treat as rough odds, not promises.
Under the prefilled assumptions, going 100% 00631L for 10 years lands at a median value of about 2.4M (≈37.6% annualised) — with a median max drawdown of −55.7% along the way. A 50/50 blend with the plain 1× index comes to about 1.5M with the drawdown cut to −43.7%; skipping leverage entirely (pure 1× index) gives about 831K at −30.0%.
Monte Carlo simulation seeded with the underlying index's 10-year CAGR and estimated volatility. That decade was a strong bull run — shave a few points off the return and look again.
A daily-reset 2× fund's long-run outcome depends on the path: in a steady uptrend, daily compounding pushes it *beyond* 2×; in a sideways chop, the same mechanism eats your money (volatility decay). Taiwan's last decade was the former, which is why 00631L's track record looks spectacular — in hindsight. The five columns answer "how much?": 100/0 is all-in on the 2× fund, 0/100 is the plain 1× index, and the middle columns are the compromises. Watch the max-drawdown row — with a daily 2× product, a deep drawdown isn't an if, it's a whether-you-can-sit-through-it.
Good fit: long horizons, steady cash flow, and the genuine ability to watch the position halve without selling — using "some 2× + some 1×/cash" to run above-1× exposure.
Watch out: 00631L delivers 2× the *daily* index return, not 2× over any longer period; futures roll costs, ~1% annual fund costs and buying at a premium all pull long-run results away from the naive story. The prefilled 23.6% CAGR is the Taiwan 50's hottest decade on record — try lower.
This is a free side project I built in my spare time. If it saved you time or helped you think through a decision, buying me a coffee keeps the lights on!
How much of a leveraged ETF should you hold versus the plain index? Compare 100/0, 75/25, 50/50, 25/75 and 0/100 splits of a 2×/3× fund and its 1× index — all rebalanced yearly — on CAGR, max drawdown, Sharpe and Calmar.
Built by indigo.la.ringo · AppicLab ·
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