The institutional investor’s guide to crypto OTC trading on Luno

Everything CFOs, treasury teams, asset managers, and family offices need to know about executing large-volume cryptocurrency trades. How to avoid moving the market, protect your position, and get the price you need.

KEY STATISTICS

• 109% year-on-year growth in institutional crypto spot OTC volumes in 2025, more than 10x the growth rate of centralised exchanges.
  
• 65%+ share of total crypto trading volume now driven by institutional investors, the majority executing via OTC channels.

What is crypto OTC trading?

Crypto OTC (over-the-counter) trading is the execution of cryptocurrency transactions directly between two parties, or through a specialist intermediary, outside of a public exchange order book. Rather than placing a buy or sell order visible to all market participants, an institution negotiates directly with a desk to agree a price, volume, and settlement terms for a large block of assets.

The term over-the-counter comes from traditional financial markets, where bonds, foreign exchange contracts, and derivatives have long been traded privately between counterparties rather than on a centralised exchange. Crypto OTC follows the same logic. It moves high-volume transactions off the public order book and into a more controlled, confidential environment.

For institutional participants, OTC is typically the only practical method for executing at scale. Orders large enough to move a public exchange’s order book will generally receive less favourable average prices than a pre-negotiated OTC block, mainly due to slippage. This applies whether you are a family office making a first allocation to Bitcoin, a treasury team managing a multi-million dollar crypto position, an asset manager rebalancing a digital asset fund, or a corporate treasurer routing cross-border payments through a stablecoin settlement layer.

How OTC desks work

Understanding the mechanics of an OTC trade helps institutions assess whether a desk’s process matches their operational, compliance, and settlement requirements.

Step 1: Onboarding and KYC

Before any trade, a reputable desk will complete know-your-customer (KYC) and anti-money laundering (AML) checks. For institutions, this typically includes entity verification, beneficial ownership disclosure, source of funds documentation, and in some jurisdictions an assessment of the intended trading strategy.

Step 2: Request a quote

The institution requests a quote for a specific volume of a specific asset, for example 100 BTC or $3 million in USDT/C. The desk provides a firm quote, typically valid for a short window (15 to 30 seconds for live quotes, longer for pre-arranged block trades). This quote is an all-in price accounting for the desk’s sourcing costs, market conditions, settlement period, and risk. 

Step 3: Price negotiation and acceptance

Institutions can negotiate, particularly on large trades. Unlike a public exchange where prices are determined by the order book, an OTC desk has flexibility to offer tighter spreads in exchange for volume, speed of settlement, or an ongoing relationship. Once both parties agree, the trade is confirmed.

Step 4: Settlement

Settlement terms vary. Most reputable desks like Luno offer same-day or up to T+2 settlement across crypto and fiat rails. Some desks offer tri-party escrow arrangements, where a neutral custodian holds both legs of the trade until each side’s obligations are confirmed. This structure materially reduces counterparty risk.

Step 5: Post-trade reporting

A well-run OTC desk provides trade confirmations, settlement receipts, and where required, transaction records formatted for accounting and regulatory reporting. For institutions operating under specific compliance frameworks, this documentation is non-negotiable.

OTC vs exchange trading: a direct comparison

The choice between OTC and exchange execution is not a matter of preference. It is a matter of scale.

Dimension	OTC desk	Public exchange
Price slippage	None. Fixed price agreed in advance for the full block.	High on large orders. Sweeps liquidity through multiple price levels.
Market impact	None. The trade is not visible on the order book.	Significant. Large orders move the public price and signal intent.
Confidentiality	High. No public record of the transaction until settlement.	Low. All orders and trades are visible on-chain and on the book.
Trade size	No upper limit. Desks source liquidity for any volume.	Constrained by available order book depth at any given moment.
Price negotiation	Yes, especially for high-volume relationships.	No. Taker price is whatever the order book provides.
Settlement flexibility	Customisable: crypto-to-fiat, crypto-to-crypto, deferred, escrow.	Standardised. The exchange determines asset types and timing.
Dedicated service	Yes. A relationship manager is assigned to the account.	No. Self-service with general support only.
Regulatory oversight	Varies by desk. Reputable desks are fully licensed.	Varies by exchange and jurisdiction.

The case for OTC: key benefits for institutions

1. Price certainty and slippage elimination

When a large fund needs to close a $1 million position, placing that order through a centralised exchange’s public order book could drain available liquidity and cause progressively worse fill prices. It would also instantly broadcast a market signal. Sophisticated participants who observe unusual order flow can front-run the position, compounding the cost.

An OTC desk absorbs that impact by offering a fixed all-in price for the entire block, sourcing liquidity in a controlled way behind the scenes. For CFOs and treasury teams, this means the cost of execution is known before the trade is confirmed. That is a critical requirement for budget accountability and reporting.

2. Confidentiality and strategic discretion

Institutional trading activity visible on public order books can move markets. A large buy order in Bitcoin signals accumulation; a large sell signals distribution. Either can trigger copycat behaviour that works against the original institution’s interests.

OTC desks conduct transactions off-book. There is no public record of the trade until settlement is complete. A company adding crypto to its treasury can do so without tipping off competitors, triggering media coverage, or influencing the asset price before the position is established.

3. Deep liquidity access

OTC desks maintain relationships with multiple liquidity providers, including exchanges, market makers, mining operations, and other institutions. This allows them to source large volumes without constraining themselves to a single venue’s available depth. The network effect is particularly valuable for assets with thinner public markets, or when executing in size during periods of low exchange liquidity.

4. Flexible settlement structures

Exchange trading offers a standardised settlement experience. OTC desks offer customisation: same-day or deferred settlement, crypto-to-fiat and crypto-to-crypto pairs, tri-party escrow arrangements, and integration with the institution’s existing banking and custody infrastructure. For companies whose revenues arrive on-chain but whose liabilities are in fiat, or vice versa, this flexibility is operationally significant.

5. Dedicated relationship management

Institutions do not want to navigate a support queue when executing a large trade. OTC desks assign relationship managers who understand the client’s operational requirements, compliance obligations, and trading objectives. This direct line to an expert reduces execution friction and ensures issues are resolved before they affect settlement.

CHECKLIST: What institutions look for in an OTC desk

• Regulatory licensing in the relevant jurisdictions
  
• Verifiable proof of reserves and independent audit history
  
• ISO-certified security infrastructure
  
• Tri-party custodial arrangements or segregated custody
  
• Transparent, all-in pricing with no hidden fees
  
• Same-day or up to T+2 settlement capability
  
• Dedicated relationship manager with institutional experience
  
• On-chain provenance checks and AML screening
  
• Multi-asset support and flexible settlement options
  
• 99.9% uptime and 24/7 engineering support

Why institutions choose Luno

Luno’s OTC trading desk is built for institutional execution. It is not adapted from a retail platform.

• Fully regulated in multiple markets: Licensed as a CAT1 and CAT2 Financial Services Provider by the FSCA in South Africa, with over 100 compliance experts working closely with regulators across all active markets.
  
  
• ISO-certified security: The only ISO 27001, ISO 27701, and ISO 22301 certified crypto exchange in South Africa. Independent audits, rigorous controls, and monthly Proof of Reserves via Moore Audit.
  
  
• Zero slippage, firm pricing: Execute large orders seamlessly off the open exchange with no slippage. Fixed quotes with a clear validity window. No surprises on settlement.
  
  
• Dedicated institutional support: A named relationship manager on the ground in your market. Industry experts who understand your compliance obligations, not a generic support queue.
  
  
• Flexible settlement options: Multiple settlement options including crypto-to-fiat and crypto-to-crypto. Wide range of banking rails and custody integration. Designed around institutional operational requirements.
  
  
• 99.9% API uptime: High-performance REST and websocket API access. 24/7 engineering support with rapid response for critical issues. Infrastructure built for institutions, not adapted from retail.
  

Get in touch

Investing in Crypto assets may result in the loss of capital. Luno (Pty) Ltd is an authorised financial services provider (FSP No. 53314), and registered credit provider (NCRCP22123)

Frequently asked questions

1. What is crypto OTC trading?

Crypto OTC (over-the-counter) trading refers to the execution of large cryptocurrency transactions directly between two parties, or via an intermediary desk, outside of a public exchange order book. It is designed for high-volume trades where executing on a public exchange would cause significant price slippage or signal a trading intention to the broader market.

2. What is the minimum trade size for crypto OTC?

The minimum trade size for Luno’s OTC Desk is $50,000 USD. We work with clients to establish appropriate thresholds based on the assets, market conditions, and trading frequency involved. Contact the team directly for current minimums.

3. How does OTC pricing compare to exchange pricing?

OTC pricing includes a spread that compensates the desk for sourcing liquidity and taking on execution risk. For large trades, the OTC all-in price is almost always better than the actual average fill price on an exchange. Exchange execution on large orders sweeps through the order book at progressively worse prices. At large scales, OTC is typically the more cost-effective execution method.

4. How long does Luno’s OTC settlement take?

T+0 settlement upon funding. Fiat settlement may take longer depending on banking rails and jurisdictional requirements. Crypto-to-crypto settlements can be near-instant once compliance checks are complete. Agree settlement terms explicitly before confirming a trade.