Conviction DCA Lab · local-first, optional sync

Daily DCA.
Bounded by discipline.

Set one monthly cap. Log the dollars you actually bought — including missed days — with one-tap $20 / $30 fills.

Calculate today Log a fill
Tesla Loading… —
SpaceX Loading… —
Quotes Checking… Nasdaq market data
U.S. session Checking… New York time

Decision support, not financial advice or an order. Recent last-sale quotes can be delayed; verify the print with your broker.

Optional live stream

Stream every trade.

Connect your Alpaca market-data keys directly from this tab. Nothing is committed or sent to this site.

IEX ticks are real-time but represent one exchange. SIP requires Alpaca’s paid market-data plan. Get Alpaca keys.

01 · Today’s plan

Set the month. Get today’s amount.

Plan inputs stay on this device. Sign in only if you want the journal on your phone and computer.

Monthly pacing
TSLA 70% · SPCX 30%
Strategy
Fine-tune the strategy Balanced preset
0.70× The calculator still buys this fraction of the adaptive baseline on extended days.
1.35 Controls how strongly normalized weakness moves budget forward.
2.25× SPCX remains capped at 1.75× until it has 60 public sessions.
Price reference
TSLA · Tesla
Loading Nasdaq quote…
SPCX · SpaceX
Loading Nasdaq quote…

02 · Catch up

Missed sessions

Stays in this browser until you sign in.

Asset
Chips

Loading sessions…

Quick log TSLA
Catch up

03 · Signal desk

Price context, on demand.

Choose a range, then hover, touch, or use arrow keys to inspect any session.

TSLA Tesla

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Loading prices…

SPCX SpaceX

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Loading prices…
Ticker identity check: SPCX means Space Exploration Technologies Corp. on this page. The unrelated SPAC and New Issue ETF changed from SPCX to SPCK on 7 April 2026.

04 · Same-budget replay

Last month, same budget.

Flat and adaptive schedules deploy the exact same dollars. This is a diagnostic, not a forecast.

TSLA

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Adaptive average——
Flat DCA average——

Waiting for market data.

SPCX

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Adaptive average——
Flat DCA average——

Waiting for market data.

Closing-price replay using only then-available data. Excludes fees, taxes and slippage.

05 · Purchase history

Fills recorded so far.

DateAssetDollarsPriceSharesActions

No purchases recorded yet. Use a one-tap chip or Log fill above.

06 · Guardrails

Simple rules. Hard limits.

Adaptive pacing changes when a fixed budget is invested—not how much exists.

CapNever exceed the monthly budget.
CadenceKeep a floor buy on strong days.
WeaknessRaise today’s weight within the ceiling.
Catch-upInvest the remainder on the final session.
today = clamp((remaining budget ÷ remaining sessions) × signal, floor, ceiling) DCA at Investor.gov
Risk and data limits

TSLA and SPCX remain concentrated, volatile holdings. SPCX is capped at 1.75× until it has 60 public sessions. Nasdaq snapshots may be delayed; verify execution, fees, FX and taxes with your broker.