Introducing VWAP Execution and Guaranteed VWAP for after-work quants

Takeaway. “Beat VWAP” is vague until you model participation vs the market’s volume path—and guaranteed VWAP is a different product from plain agency VWAP targeting.

VWAP Execution and Guaranteed VWAP (Olivier Guéant, Guillaume Royer, 2013) connects optimal-trading math to a benchmark every ops desk already quotes.

Fit for learners: Indifference pricing of guaranteed VWAP contracts with permanent impact and optimal agency vs guaranteed strategies.

This Hub note is a plain-language intro. Not investment advice. Continue with Almgren–Chriss and Guéant block pricing.

The problem

Clients and desks talk VWAP casually. Agency traders try to track volume-weighted price; some contracts guarantee VWAP and shift risk. Without impact and volume dynamics, those words collapse into marketing.

The idea / core intuition

• Separate agency VWAP targeting (try to finish near VWAP) from guaranteed VWAP (someone bears the residual risk).
• Use indifference / optimal-control style pricing when permanent impact and market volume matter.
• Optimal schedules depend on how your participation interacts with the volume clock—not only calendar time.
• Toy notebooks can compare a flat participation schedule vs a volume-aware one under a made-up volume curve.

The PDF carries the formal setup; this note only maps vocabulary for after-work readers.

Why after-work Python learners care

VWAP is the first “real desk” benchmark many learners hear. Coding a discrete participation schedule against a synthetic volume curve teaches clocks, cumulative volume, and cost—before any broker API.

Tiny evening exercise: invent an intraday volume curve (array of bucket volumes); allocate a parent order proportional to volume vs equal buckets; print both “arrival vs VWAP-like” toy costs under temporary impact—learning only.

One-evening reading checklist

1. Define VWAP in one sentence (volume-weighted average price).
2. Contrast agency targeting vs a guaranteed VWAP contract.
3. Note why permanent impact changes the pricing story.
4. Write why the market’s volume path matters for your schedule.

Download PDF

Download PDF

Landing: arXiv abs

Important disclaimer

Not investment advice. This Hub note is educational only. Guéant–Royer is research—not a licence to quote, guarantee, or execute VWAP with real capital.

What this is not

• Not CEF / subsidy framing
• Not Quant or Macro course CTA
• Not a broker / algo-sales pitch

Next step

Single course CTA: SoloQuant Academy’s Introduction to Python Programming—arrays, loops, and plots first; then VWAP notebooks stop feeling like magic.