SRP · London (LSE) · Commercial Services

What does it cost to trade Serco Group plc?

A $10,000 order costs about $156.92 (156.9 bps) between the half-spread and market impact.

Data as of 1 November 2026

Cost of $10k$156.92
Estimated quoted spread173.8 bps
Average daily trading value$5.8M
Daily volatility1.48%
1-day VaR (95%) on $10,000$243
Liquidity tierVery thin

Estimated cost by order size

Order Half-spread Market impact Total Share of daily volume
$1,000 87.0 bps 27.4 bps $11.44 · 114.4 bps 0.017%
$10,000 87.7 bps 69.3 bps $156.92 · 156.9 bps 0.172%
$100,000 94.4 bps 187.3 bps $2,816.58 · 281.7 bps 1.72%

Liquidity

Serco Group plc trades about $5.8M a day, which puts it in the very thin liquidity tier. At that depth the model estimates a quoted spread of 173.8 bps, so a market order pays roughly half of it on the way in, and again on the way out. An order stays below 1% of a normal day's trading up to about $58.2K.

Volatility and risk

Daily volatility is around 1.48%, which is moderate for a stock. On a $10,000 position, the 1-day value at risk at 95% is about $243: on one trading day in twenty, a loss larger than that should be expected. Volatility also widens spreads, which the cost estimate above already includes.

How these figures are estimated

Spread: PreTrAIde's liquidity-tier model (average daily trading value) with a volatility uplift and a one-tick floor. Market impact: an Almgren-Chriss-style model on the order's share of daily volume. VaR: 1.645 × daily volatility. Inputs are 30-day average volume and recent price range. These are estimates, not quotes: the real cost depends on the market when the order is placed. PreTrAIde Methodology: How a Pre-Trade Analysis Is Computed

Frequently asked questions

How much does it cost to buy $10,000 of Serco Group plc?

PreTrAIde estimates about $156.92 (156.9 bps) for a $10,000 market order in Serco Group plc: $87.66 of half-spread and $69.25 of market impact, before any broker commission.

Is Serco Group plc a liquid stock?

Serco Group plc trades about $5.8M a day, in the very thin liquidity tier of PreTrAIde's model, with an estimated quoted spread of 173.8 bps.

How volatile is Serco Group plc?

Its daily volatility is about 1.48% (moderate). The 1-day 95% value at risk on a $10,000 position is about $243.

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Educational content, not investment advice. PreTrAIde is analysis software, not a broker: it never executes orders, and its verdicts are decision support, not recommendations to buy or sell.