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LIQUIDITY PROVISION IN CAPACITY-CONSTRAINED MARKETS

机译:容量受限市场的流动性规定

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摘要

We study a competitive dynamic financial market subject to a transient selling pressure when market makers face a capacity constraint on their number of trades per unit of time with outside investors. We show that profit-maximizing market makers provide liquidity in order to manage their trading capacity constraint optimally over time: they use slack trading capacity early to accumulate assets when the selling pressure is strong in order to relax their trading capacity constraint and sell to buyers more quickly when the selling pressure subsides. When the trading capacity constraint binds, the bid-ask spread is strictly positive, widening and narrowing as market makers build up and unwind their inventories. Because the equilibrium asset allocation is constrained Pareto-optimal, the time variations in bid-ask spread are not a symptom of inefficient liquidity provision.
机译:当做市商面临单位时间内与外部投资者进行交易的能力限制时,我们研究一个竞争性动态金融市场,该市场会承受短暂的抛售压力。我们表明,利润最大化的做市商提供流动性,以便随着时间的推移最佳地管理其交易能力约束:他们在卖出压力很大时尽早使用闲置的交易能力来积累资产,以放松他们的交易能力约束并卖给更多买家当销售压力消退时很快。当交易能力约束受到约束时,买卖差价严格来说是正数,随着做市商积累和解散库存而扩大和缩小。由于均衡资产分配受帕累托最优约束,因此买卖差价的时间变化并不是流动性拨备不足的征兆。

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