Composite Market Making on Lighter RWA with Databento US Equities NVDA

This tutorial runs the shipped CompositeMarketMaker strategy on Lighter's NVDA-PERP.LIGHTER RWA market using Databento NVDA.EQUS quotes as an external signal. The strategy quotes one post-only bid and one post-only ask around the Lighter mid, then shifts both sides from a normalized Databento residual and the current Lighter inventory.

The setup uses a Rust LiveNode, while the strategy itself runs as the native Rust CompositeMarketMaker strategy.

Introduction

Lighter lists real-world asset (RWA) perpetuals that trade continuously, including single-name equity markets. See Lighter's RWA docs and market specifications for current venue details. Databento's US Equities datasets provide US equity top-of-book data for NVDA, with mbp-1 available through the Nautilus Databento adapter.

CompositeMarketMaker is a small two-input market maker:

• The target instrument is the Lighter market to quote: NVDA-PERP.LIGHTER.
• The signal instrument is the Databento reference feed: NVDA.EQUS.
• The anchor is the Lighter mid.
• The signal residual is (databento_mid / baseline) - 1.0.
• The quote shift is signal_skew_factor * residual - inventory_skew_factor * net_position.

With no configured baseline, the strategy captures the first observed NVDA.EQUS mid as the reference price. The residual starts at zero and measures NVDA's move from that first signal mid, not the Lighter/Databento basis. Set the SIGNAL_BASELINE constant in the example source to pin the reference price for deterministic runs.

In this setup, the Lighter BBO remains the spread anchor. Databento moves the quote center up or down through the normalized residual.

The focus is the adapter wiring: one engine consumes a direct US equity feed and a crypto-native RWA venue, while order lifecycle, inventory, and quote state stay inside the same event-driven runtime.

Prerequisites

• A Rust toolchain (MSRV 1.96.0 or newer).
• A Cargo project with the Nautilus, Lighter, and Databento crates as dependencies (see Project setup).
• Python 3.12+ to regenerate the rendered panels.
• A Databento API key with live access to Databento US Equities Plus (EQUS.PLUS) for the bundled NVDA.EQUS route.
• Lighter API credentials (numeric account index, API key index, and API secret) for the configured environment (testnet by default), required only to connect and submit orders.
• The Lighter integration guide: Lighter.
• The Databento integration guide: Databento.

The example reads credentials from environment variables and keeps the strategy parameters as editable Rust constants. It defaults to LighterEnvironment::Testnet, so set the testnet Lighter credentials:

export DATABENTO_API_KEY="your-databento-api-key"
export LIGHTER_TESTNET_ACCOUNT_INDEX="123456"
export LIGHTER_TESTNET_API_KEY_INDEX="0"
export LIGHTER_TESTNET_API_SECRET="your-lighter-api-secret"

For mainnet, change LIGHTER_ENVIRONMENT in the source to LighterEnvironment::Mainnet and use the mainnet LIGHTER_* credential variables described in the integration guide. Set DATABENTO_API_KEY before running the example.

Project setup

The strategy, node, and adapters ship as crates, so you can depend on them from your own Cargo project rather than working inside a NautilusTrader checkout. Add the following to your Cargo.toml, pointing every Nautilus dependency at the same develop git source so the crates resolve to one consistent version:

[dependencies]
nautilus-common = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["live"] }
nautilus-core = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop" }
nautilus-databento = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["high-precision", "live"] }
nautilus-lighter = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["examples", "high-precision"] }
nautilus-live = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["node"] }
nautilus-model = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["high-precision"] }
nautilus-trading = { git = "https://github.com/nautechsystems/nautilus_trader.git", branch = "develop", features = ["examples", "high-precision"] }

tokio = { version = "1", features = ["full"] }

The examples feature on nautilus-trading exposes the CompositeMarketMaker strategy, and high-precision is required for Lighter's crypto-native pricing. For the general crate layout, feature flags, and the crates.io alternative to the git source, see the Rust project setup guide.

The Databento client also needs a publishers file that maps venues to datasets. Download publishers.json from the Databento adapter crate and point publishers_filepath at your local copy. The shipped example resolves the same file relative to the checkout, so this step only applies to your own project.

Why NVDA

NVDA is a liquid Nasdaq-listed single-name equity, and Lighter maps its RWA perpetual to NVDA-PERP.LIGHTER. This pairs a licensed Databento signal with a Lighter traded market:

Subscribing to NVDA.EQUS requests top-of-book (mbp-1) quotes for NVDA from Databento's EQUS.PLUS dataset by default, delivered as a single QuoteTick stream. The adapter resolves the EQUS venue from a publishers file: the example points DatabentoLiveClientConfig at the publishers.json bundled with the Databento adapter. See Instrument IDs and symbology for the mapping rules.

The older Databento Equities Basic (DBEQ.BASIC) dataset name appears in some grandfathered accounts and historical examples. New Databento subscriptions use the Databento US Equities product line, so this tutorial uses the consolidated EQUS venue. Treat the top-of-book feed as a licensed signal proxy for the tutorial wiring, not as a full depth Nasdaq TotalView book.

The example starts at trade_size=0.05, which aligns with the Lighter NVDA minimum base amount observed during tutorial validation. Check the market details endpoint before increasing size or changing instruments.

Session constraint

Lighter RWA markets trade continuously. NVDA.EQUS follows the US equity market data session. The first live test should run during the regular cash session (13:30-20

CompositeMarketMaker does not include a built-in session gate or signal-age guard. For production use, add an actor or strategy variant that cancels quotes when the Databento signal goes stale. The tutorial example keeps this explicit instead of hiding it in a custom strategy.

Example node

There are two ways to run this: from a NautilusTrader checkout via the shipped Lighter NVDA composite market maker example binary, or by copying the node wiring below into a main in your own project that depends on the crates from Project setup.

From a checkout, with the credential variables set, the shipped binary builds the node, registers all three clients, adds the native strategy, and exits without connecting:

cargo run --bin lighter-nvda-composite-mm --package nautilus-tutorials --features examples

Databento is a multi-venue data client without a fixed venue route, so the engine uses it as the default route for NVDA.EQUS. Lighter registers with the LIGHTER venue route and receives NVDA-PERP.LIGHTER subscriptions.

The core of the setup is the three-client node plus CompositeMarketMaker:

let lighter_environment = LIGHTER_ENVIRONMENT;
let trader_id = TraderId::from(TRADER_ID);
let account_id = AccountId::from(ACCOUNT_ID);
let instrument_id = InstrumentId::from(INSTRUMENT_ID);
let signal_instrument_id = InstrumentId::from(SIGNAL_INSTRUMENT_ID);

let databento_api_key = get_env_var("DATABENTO_API_KEY")?;
let databento_config =
    DatabentoLiveClientConfig::new(databento_api_key, publishers_filepath, true, true);
let lighter_data_config = LighterDataClientConfig {
    environment: lighter_environment,
    ..Default::default()
};
let lighter_exec_config = LighterExecClientConfig::builder()
    .trader_id(trader_id)
    .account_id(account_id)
    .environment(lighter_environment)
    .build();

let strategy_config =
    CompositeMarketMakerConfig::new(instrument_id, signal_instrument_id, max_position)
        .with_strategy_id(StrategyId::from("NVDA_COMPOSITE_MM-001"))
        .with_order_id_tag("001".to_string())
        .with_trade_size(trade_size)
        .with_half_spread_bps(HALF_SPREAD_BPS)
        .with_inventory_skew_factor(INVENTORY_SKEW_FACTOR)
        .with_signal_skew_factor(SIGNAL_SKEW_FACTOR)
        .with_requote_threshold_bps(REQUOTE_THRESHOLD_BPS)
        .with_on_cancel_resubmit(ON_CANCEL_RESUBMIT);

let mut node = LiveNode::builder(trader_id, Environment::Live)?
    .with_name("LIGHTER-NVDA-COMPOSITE-MM-001".to_string())
    .with_reconciliation(RUN_LIVE)
    .add_data_client(
        None,
        Box::new(DatabentoDataClientFactory::new()),
        Box::new(databento_config),
    )?
    .add_data_client(
        None,
        Box::new(LighterDataClientFactory::new()),
        Box::new(lighter_data_config),
    )?
    .add_exec_client(
        None,
        Box::new(LighterExecutionClientFactory::new()),
        Box::new(lighter_exec_config),
    )?
    .build()?;

node.add_strategy(CompositeMarketMaker::new(strategy_config))?;

To connect and allow order submission, edit the constants near the top of the example source:

const RUN_LIVE: bool = true;
const ALLOW_LIVE_ORDERS: bool = true;

Then run the same command:

cargo run --bin lighter-nvda-composite-mm --package nautilus-tutorials --features examples

For a testnet smoke run, keep LIGHTER_ENVIRONMENT as LighterEnvironment::Testnet and use the LIGHTER_TESTNET_* credential variables. If the run is outside the Databento US Equities cash session, it can still validate node startup, routing, Lighter data, and the order lifecycle. The Databento residual remains zero until the first NVDA.EQUS quote arrives.

Strategy parameters

With a Lighter mid of 207.00 and half_spread_bps=25, the unskewed half spread is 0.5175 USD. If Databento is 30 bps above its baseline, a signal_skew_factor of 55.0 shifts both sides up by 0.165 USD before inventory skew. A long position of 0.05 with inventory_skew_factor=2.0 shifts both sides down by 0.10 USD.

Requote behavior

Signal ticks update internal state but do not submit orders by themselves. Until the first Databento quote arrives, the residual is zero. The next Lighter quote tick reads the latest signal residual and checks the quote state. A quote cycle occurs when:

• no target orders are open or in-flight;
• the Lighter anchor moves by at least requote_threshold_bps; or
• the price impact of the signal residual change clears the same threshold.

The strategy then cancels open orders, reads current net position and pending exposure from the cache, computes one bid and one ask, drops any side that breaches max_position, and submits the remaining sides as post-only limits.

Panels

The panels below use deterministic replay data. They show the quoting mechanics and the cash-session constraint. They are not a captured live Lighter fill trace.

Figure 1. Databento NVDA.EQUS mid, Lighter NVDA-PERP.LIGHTER mid, composite bid, composite ask, and quote center.

Figure 2. Databento residual, Lighter basis, and quote-center shift in bps.

Figure 3. Net position, signal shift, inventory adjustment, and total shift for a 0.05 NVDA trade size and 0.20 NVDA position cap.

Figure 4. Lighter's continuous RWA market clock against the Databento US Equities cash-session signal, with signal age after the regular session.

Regenerate the panels

uv sync --extra visualization
python3 docs/tutorials/assets/lighter_rwa_composite_mm/render_panels.py

The renderer writes four PNGs into docs/tutorials/assets/lighter_rwa_composite_mm/. It uses the nautilus_dark Plotly theme and deterministic replay data so docs builds do not depend on vendor data licenses or live exchange access.

Extensions

The next useful improvement is a signal-age gate. For example, cancel all Lighter orders when the latest NVDA.EQUS quote is older than 30 seconds during the cash session, or immediately after the cash session closes. That makes the Databento signal an explicit operating dependency instead of an implicit one.

For a pure fair-value strategy, use this tutorial as the client wiring and write a small variant that anchors bid/ask directly on the Databento mid, then checks the Lighter BBO only for post-only and basis limits.