Liquidity Providers 101 — Where Your Prices Come From.

New broker founders obsess over branding, marketing and payment rails — then discover the question that actually defines their economics: where does the liquidity come from? Your liquidity arrangements determine the spreads your clients see, the cost of hedging your risk, the quality of your fills and, ultimately, whether your pricing is competitive enough to keep traders or wide enough to lose them.

The good news is that liquidity management has become an operational discipline rather than an engineering project. Here is what a new broker needs to know, and how it's handled inside eTrader Broker.

What a Liquidity Provider Actually Does

A liquidity provider (LP) is a counterparty — a bank, a non-bank market maker or a prime-of-prime aggregator — that streams executable bid and ask prices to your broker and stands ready to fill your orders at those prices. When you hedge a client's trade "A-book," you are opening a mirroring position with your LP; their price becomes your cost basis, and the difference between what the client pays and what you pay the LP is your margin.

For a new broker, LPs matter in three concrete ways:

• Raw pricing. The tighter the LP's spread, the more room you have to add your own markup and still show a competitive price.
• Hedging capacity. When your book concentrates — one instrument, one direction — the LP is where you offload the exposure you don't want to warehouse.
• Fill quality. Rejections, requotes and slippage at the LP level surface directly in your clients' experience and your dealing costs.

Connecting LPs Without an Integration Project

Traditionally, each LP connection was a technical project: connectivity, symbol mapping, testing, and a bridge licence to glue it all to your platform. In eTrader Broker, LP connectivity is a dashboard function — you connect and manage your liquidity providers from the same console that runs your accounts, groups and instruments, with no bridge vendor in between. Your order flow can then be hedged straight through to your LPs (A-book) or internalised (B-book), decided per group, per instrument and per trader — the full decision framework is covered in our A-book vs B-book guide.

Two design choices matter here. First, the platform is source-agnostic: eTrader runs over your firm's own liquidity and data arrangements, so your LP relationships are your commercial asset, not the vendor's. Second, a 70ms-updated data feed is included free — meaning you can be live and streaming professional market prices from day one, then plug in your own price sources per instrument whenever you're ready. No separate market-data contract to source, negotiate and pay for every month just to open the doors.

Spreads and Markups: Your Margin, per Group

Raw LP prices are the wholesale cost; your retail price is that quote plus your markup. The control that separates professional operations from amateur ones is granularity. In eTrader Broker, spreads and markups are controlled per group — so you can price differently for different client segments without touching code:

• Standard groups — wider markup, no commission, the classic retail structure.
• Premium or high-volume groups — tighter markup for clients whose volume earns it.
• Regional or campaign groups — pricing tuned to a market you're entering aggressively.

Group-level control also interacts with routing and risk: leverage, instrument availability and A/B-book treatment are all managed along the same group axis, so one coherent segmentation drives pricing, risk and routing together. For the deeper commercial strategy — how much markup the market bears, when to use commission-based pricing — see pricing your broker.

Evaluating LPs: The Questions That Matter

When you do add liquidity relationships, evaluate them like the counterparties they are:

• Spread and depth — not just the top-of-book spread in quiet markets, but pricing during news and rollover, and depth at the sizes you'll actually trade.
• Execution statistics — fill rates, rejection rates and average execution latency. eTrader Broker surfaces your LP fill rate on the dashboard, so degradation is visible, not anecdotal.
• Instrument coverage — forex, metals, indices and crypto in one relationship, or several specialists?
• Commercial terms — minimum monthly fees, margin requirements and settlement mechanics can quietly outweigh headline spreads for a small book.

Because exposure and P&L are monitored live in the dashboard, you can also judge an LP by what your own book shows: if hedged flow consistently costs more than the exposure it removes, the arrangement — or your routing rules — need revisiting. Live monitoring is the subject of our broker risk management guide.

Liquidity, Routing and the Self-Optimising Book

LPs are one half of a system; routing is the other. Once liquidity is connected, eTrader Broker's intelligent auto-routing can score every trader and order in real time and decide what to hedge to your LPs and what to warehouse — profitable or high-risk flow goes A-book, the rest stays B-book, switching dynamically as behaviour changes. That turns your LP relationships from a fixed cost into a precision instrument: you pay for external liquidity exactly where it protects you, and keep the margin everywhere else. You can see the whole liquidity console in the live demo.

"Your LP relationship prices every trade you route. Treat it like a partnership, measure it like a vendor."

— Roman Onta, Executive Director, Broker CRM & UI/UX

Frequently Asked Questions