I ran 136 weeks of DCA: $13,600 only made $132; going all-in at once made $11,042.

With the same $13,600: after investing $100 every week for 136 weeks, the ending balance is $13,732, a return of +0.97%. If you buy all $13,600 on the first day in one lump sum, the ending balance becomes $24,642, +81.19%. You’re short by $10,910. In a one-direction uptrend, DCA is simply pure cash drag.

Let’s lay out the data first: BTC/USDT 1-hour data from 2024-01-16 to 2026-08-22—exactly 136 full weeks. Start price: $42,617. End price: $77,219. Price increase over the period: +81.2%. The DCA plan buys a fixed $100 every week, regardless of price and timing; the lump-sum plan uses the same $13,600 to buy everything on day one. Both sides use no leverage and do not account for fees—this is purely the difference caused by when the capital entered.

Why is the gap so big? DCA returns ≈ market rise × (1 − cash drag). Money is deployed week by week. In the first half of the period, a large portion of cash is sitting outside and can’t capture the rally. Over the 136 weeks, roughly 60% of the funds enter only in the second half. Since this is a one-way uptrend, the drag is essentially pure cost.

But the conclusion isn’t “DCA is useless.” It’s: “DCA is a risk tool, not a return tool”:

1️⃣ One-way uptrend: DCA will lose against lump-sum at least once. You’re buying a psychological insurance policy that doesn’t require you to judge direction.

2️⃣ Downtrend or sideways: the conclusion can flip. DCA can use a lower average price to acquire more units—but you must run your own backtest on the data you truly plan to invest with; don’t just take someone else’s word for it.

3️⃣ The correct AI instruction: Using the same data and the same total capital, run two simulations—“weekly DCA” and “buy everything on day one”—then output the two ending values and the maximum drawdown. Get an answer in ten minutes. It’s more reliable than listening to anyone’s opinions.

Finally, draw a boundary: this data only represents the period from 2024-01 to 2026-08. If you switch to a downtrend period, the two lines of numbers above will completely reverse—don’t use conclusions from one market phase to predict the future.

By the way, I also scanned “frequency” as a parameter. Same total capital of $13,600:
Weekly invest $100 → +0.97%
Invest every two weeks $200 → +1.11%
Monthly invest $425 → +3.06%
All-in on day one → +81.19%
The slower you invest, the lower the returns. The ranking is so clean it’s uncomfortable. If you want AI to do this, the instruction is simple: fix total capital, run three frequencies (every 7/14/30 days), and output ending equity and maximum drawdown.

Are you doing DCA now or going all-in at once? Share your reasoning in the comments.

$BTC #crypto