Portfolio composition

Composition analytics answer a deceptively simple question: what is your portfolio actually made of? The answer matters because two portfolios with identical total returns can have radically different risk profiles depending on how their exposure is distributed across asset classes, currencies, sectors, and strategies. IBviz provides composition breakdowns along each of these dimensions, and crucially, it tracks them over time rather than showing only a point-in-time snapshot.

Snapshot vs. history: why the distinction matters

A composition snapshot tells you where the portfolio stands today. A composition history tells you how it got there, whether it stayed within its intended parameters along the way, and how allocation decisions correlated with performance outcomes. A portfolio that looks well-diversified today may have been dangerously concentrated three months ago when most of its gains were made. Without the historical view, that concentration would be invisible.

Tracking composition over time also surfaces drift: the natural tendency of a portfolio to become more concentrated in its winners as they grow. What started as a 5% position can quietly become a 20% position without a single active decision. IBviz makes this drift visible so that rebalancing decisions are based on observation, not assumption.

Asset class breakdown

IBviz groups every position by asset class (equities, fixed income, derivatives, cash, private assets, and others) and tracks each group's weight over time. The breakdown chart shows how the allocation has shifted across the portfolio's history, revealing rotation between asset classes and identifying periods when the portfolio was over- or under-exposed to a given category relative to its intended allocation.

The current snapshot view complements the history by showing the precise weight of each asset class at the reference date, making it easy to assess whether the portfolio's current structure reflects deliberate positioning or unintended drift.

Sector breakdown

Within the equity sleeve, IBviz further decomposes exposure by sector (technology, financials, healthcare, energy, consumer, industrials, and so on). Sector concentration is a common and underappreciated source of risk: a portfolio of 30 different stocks can still be effectively a technology sector bet if half its weight sits in tech names. The historical sector breakdown reveals how sector tilts evolved and how they correlated with periods of strong and weak performance.

Currency exposure

For portfolios holding assets denominated in multiple currencies, IBviz tracks the weight of each currency over time. Currency exposure is often larger than it appears: an investor holding US-listed stocks but denominated in EUR, GBP, and JPY carries significant FX risk that does not show up in the asset class or sector breakdown.

The historical currency breakdown is particularly useful for identifying unintended FX drift. As foreign-currency assets appreciate (or their local currency strengthens), their weight in the portfolio grows, increasing FX exposure without any active decision. Seeing this evolution over time provides a basis for assessing whether FX hedging or rebalancing is warranted.

Long vs. short allocation

For portfolios that include short positions or derivatives, IBviz separately tracks gross long exposure, gross short exposure, and net exposure over time. This view is essential for strategies where the long/short balance is a deliberate source of risk control: a long/short equity strategy that was designed to run at 30% net long but has drifted to 70% net long is no longer the strategy it was intended to be.

Monitoring the long/short split historically also reveals how the portfolio's directionality changed across different market environments, which is useful for understanding whether the strategy performed as expected during periods of market stress.

Derivatives

Derivatives present a particular challenge for composition analytics. A futures contract or an options position typically has a market value close to zero at inception, since the initial margin or premium paid is a fraction of the economic exposure the instrument controls. Showing derivatives at market value in a composition breakdown therefore dramatically understates their true weight in the portfolio.

IBviz addresses this by displaying derivatives at their nominal value (also called notional value) rather than market value. The nominal value represents the full economic exposure the derivative controls. Consider an S&P 500 futures contract: when the position is opened, its mark-to-market value may be near zero, but a single contract controls approximately $250,000 of equity exposure (at an index level of 5,000 and a multiplier of 50). Showing that position at market value would make it appear negligible in the portfolio. Showing it at nominal value correctly reflects that the portfolio has material equity exposure that needs to be accounted for in any composition or risk analysis.

This distinction is especially important when monitoring leverage, sector exposure, and long/short balance in portfolios that use derivatives for hedging or to express directional views.

Strategy-level composition and P&L replay

If your portfolio is organized into sub-strategies, IBviz tracks the weight of each strategy over time and shows how their relative sizes have evolved. This is the highest-level composition view: rather than asking what asset classes or sectors you own, it asks how capital is allocated across your distinct investment approaches.

Combined with the portfolio replay visualization (covered in detail in the Attribution article), strategy-level composition history provides a complete picture of how the portfolio's structure and its return drivers evolved in tandem. This is the most direct way to assess whether the portfolio's actual evolution matched the investor's original intent.