A Stratmill kutatóügynöke által írt összefoglalók és fő gondolatok azokból a könyvekből, tanulmányokból, cikkekből és kódokból, amelyeket MI-ügynökeink elolvastak. Minden oldal az eredeti műre mutat.
Dokumentumok száma: 20,364
The document explains why electronic order behavior cannot be learned from one universal description. Exchanges differ in the order types they support and in their matching rules, which determine matters such as queue priority and the effects of order…
The note distinguishes an immediate portfolio value change caused by recalibrating a pricing model from the later PnL associated with an imperfect delta hedge. It asks whether these amounts are linked and how to decide whether to recalibrate, but the…
The document raises a proposed way to handle negative variance values when simulating the Heston stochastic volatility process: discard a draw that produces a negative variance and sample again. The author argues that independent, identically distributed…
The document compares ways to represent an order book while supporting price ordering, fast updates, and access to the best bid and ask. For order-based equity books, one detailed proposal combines an order-ID lookup structure with metadata linking each…
The document considers whether an option should be sold when its market quote falls below a Black–Scholes estimate. Its main guidance is to treat the discrepancy as a prompt to investigate assumptions and inputs, rather than as evidence that the option is…
The document proposes borrowing concepts from physics to describe market fluctuations. It suggests measuring price movement as velocity, with possible measures based on accumulated absolute changes, net changes, or the difference between two observations. It…
The document describes a QuantLib-Python construction error caused by passing simple cash flows to a Bond constructor that expects a leg of coupons. The proposed correction is to represent scheduled interest payments as fixed-rate coupons, with payment…
The document explains that a trade does not have to move the mid-price when the mid is defined as the average of the best bid and best ask. If the top of book has enough displayed size, a market order smaller than that size can execute without removing the…
The document outlines a supervised learning setup for choosing positions in a single instrument. At each point in time, past prices are summarized as features such as momentum, volatility, and other technical indicators; fundamental information could also be…
The document frames predatory trading as a contest between a trader attempting to force liquidation and a targeted trader who may be solvent and able to draw on reserves or credit to maintain a position. It contrasts this situation with models centered on…
The document explains why increasing time to maturity does not have a uniformly positive effect on European option values. More time generally adds time value for an at-the-money option because the underlying has more opportunity to move favorably while the…
The document asks what price process can represent a perceived pattern in which prices rise gradually but fall abruptly. It contrasts this intuition with geometric Brownian motion, whose continuous paths do not contain sudden jumps, and points to Lévy…
This document presents VBA implementations of time decay for European call and put options under Black–Scholes, with continuous dividend yield. It lays out the shared inputs and intermediate quantities, including the standard normal cumulative probabilities,…
The document discusses why investors and fund managers compare performance with an index rather than judging returns only in absolute terms. Its answers offer several explanations: benchmarks help assess whether an active manager adds value over a passive…
The document proposes a master’s thesis studying how short-selling restrictions affected financial firms during the 2008 crisis. The suggested design compares similar banks or financial companies in countries that banned short sales with counterparts in…
The document explains why Girsanov’s theorem matters for geometric Brownian motion in finance. Under the original probability measure, an asset’s drift is its expected return, which generally differs from the risk-free rate. Girsanov’s change of measure…
The document clarifies how market implied volatility surfaces for caps and European swaptions relate to pricing more complex interest rate derivatives. A quoted surface represents vanilla option prices under a chosen convention or simple model, such as…
The document frames a bankroll-sizing problem for poker cash games, where returns over a fixed number of hands are treated as approximately normally distributed rather than as discrete tournament payouts. It gives an example with a stated mean and standard…
The document explains why the relationship between equity prices and interest rates changes with the economic backdrop. It contrasts the familiar channel in which higher borrowing costs weigh on firms with conditions where stronger growth lifts earnings…
The document explains why initial margin valuation adjustment (MVA) requires simulation even though initial margin is calculated at the start of a trade. It clarifies that initial margin is recalculated over time: market conditions, portfolio positions, and…
The document points readers seeking current Nasdaq and NYSE delistings to the listing exchanges’ own public lists. It notes that these sources cover exchange-initiated and issuer-initiated cases, and also mentions lists of companies that have fallen short of…
The document asks what an unfunded total return series for the CDX North American investment-grade index represents. It cites a Bloomberg series identified as an unfunded total return index and distinguishes the question from the general difference between…
The document asks why the Heston model’s call-price boundary at zero instantaneous variance equals the discounted intrinsic value of the option. It defines the option value as a function of time, spot price, and variance, then presents the boundary condition…
The document presents Black-Scholes as a foundational model and starting point, while explaining that its simplifying assumptions do not capture several observed features of market returns. It names fat tails and skew, changing volatility over time, and…