Video summary

Quantos Fundos Imobiliários você deve ter na sua carteira?

Main summary

Key takeaways

Finance

Finance-focused summary (REIT/“FII” portfolio construction)

Core question

  • How many Brazilian real estate investment trusts (FII / REITs) should you hold for a well-diversified portfolio—especially whether only ~4 is enough.

Methodology / frameworks referenced

Markowitz Portfolio Theory / Efficient Frontier (Markowitz)

  • Goal: maximize return for minimum risk (the efficient frontier).
  • Portfolio construction should be statistical/mathematical, not emotion-driven.

Systematic vs. diversifiable (unsystematic) risk decomposition

  • Some risk cannot be diversified away (systematic risk).
  • Other risk can be reduced by adding more assets (unsystematic risk).

Diversification “diminishing returns” threshold

  • There is a point where adding more FIIs increases complexity but reduces risk only marginally.

Key findings from cited studies (with explicit numbers)

1) Study 1: “Real Estate Investment Fund Portfolio Composition Based on Markowitz’s Portfolio Selection”

  • Data: ~2018-era data, looking back about 5 years (2013+).
  • Universe: 31 selected FIIs from a “standard negotiability/liquidity” index.

Two scenarios constructed

  1. Scenario 1 (no upper cap per fund)
    • Weights can vary freely (subject to total weights = 100%).
  2. Scenario 2 (upper cap)
    • Constraint: no fund > 20%
    • This implies at least ~5 funds (because weights must sum to 100%).

“Optimal” number of assets (as presented)

  • Without the 20% cap constraint, the study reports a minimum-efficient portfolio of 7 assets.
  • Concentration is mathematically possible, but the result they present is 7.
    • Example concentration risk: one highlighted portfolio had HCRI ~64% weight.

“20-fund barrier / diversification floor” concept

  • Their risk-reduction curve shows:
    • Meaningful risk drops when adding assets,
    • With an inflection around ~10,
    • And diminishing improvements after ~20.
  • Interpretation: beyond that, extra FIIs add complexity with little extra risk reduction.

Performance / risk comparison vs. IFIX

  • Portfolio 1:
    • Had a negative return ~-3.11% in Dec 2015
    • Driven by HCRI: -5.64% with HCRI ~64% weight
  • Portfolio 2:
    • Was never as negative, attributed to the 20% cap
  • Monthly outperformance vs IFIX:
    • Portfolio 1 outperformed in 50% of months
    • Portfolio 2 outperformed in 60% of months

Conclusion (as presented)

  • Portfolio 2 “makes the most sense for a rational investor” because it delivers:
    • Similar returns with:
      • lowest risk
      • higher risk premium (implied: better risk-adjusted outcome)
  • The “only 4” idea is challenged:
    • With a 20% cap, you need at least 5 funds.
    • The broader “optimal efficient” results suggest more than four.

2) Study 2: REIT/FII diversification vs stocks (meta-analysis / cross-market comparison)

  • Researchers mentioned include:
    • Constantina Lecar (2011)
    • Yoro, Luis, and Zuga (referenced using 2015 data and Markowitz-constructed FIIs portfolios)

Claims / framing

  • Diversification potential of REITs > stocks.

Explicit quantitative results

  • REIT regression constant:
    • Risk reduced to 39.58%
    • Interpreted as “eliminating 60% of the risk”
  • Stocks regression constant:
    • Risk reduced to a higher remaining level
    • Eliminated 42.71% of risk (i.e., less reduction than REITs)

“Risk reduction per extra asset” statements (as presented)

  • With 1 REIT (100% systemic risk exposure), adding one more REIT drops risk by ~20%.
  • With 1 stock, adding another reduces risk by ~15%.
  • Despite these figures, the conclusion still emphasizes that funds diversify better.

Second convergence point on a ~20 limit

  • Multiple approaches are said to find a similar threshold:
    • Less than ~20 FIIs is where risk reduction stops improving materially (systematic-risk line reached).

Practical recommendations / cautions (explicit recommendations)

  • Caution against relying on only ~4 FIIs
    • Especially for someone investing long-term for retirement.
    • Starting with 4 may be possible, but it is described as higher risk and not the ideal model.
  • Target “ideal region”
    • Recommended portfolio size: ~10 to 15 FIIs
    • Rationale: improves risk without yet being in the saturation zone.
    • (The narrative also mentions 8–15, and a cross-study convergence around “nine”.)
  • Argues for “more than 4”
    • Complexity increases, but risk reduction can justify the tradeoff.
  • Selection quality matters
    • Prefer fewer, better-chosen FIIs rather than many mechanically selected ones.
    • Example described:
      • Build toward a target count (e.g., 10)
      • Add gradually monthly
      • Avoid traps like “top 3 FIIs only.”
  • Risk management emphasis
    • Concentration risk is dangerous (e.g., HCRI ~64% leading to large negative months).
    • A 20% per-fund cap is treated as a key diversification constraint (aligned with how IFIX is conceptualized in the discussion).

Assets / tickers / instruments mentioned

Example FIIs / REIT tickers (named)

  • HGLG, MXRF11, HGRU, HSML, HCRI, HTMX, PQDP
  • Others listed among the studied set (many), including:
    • ALU M11B, BBFI, BBJV, BBFF, BCF, BRCF, HCR, HGBS, HGCR, H, HGRE, KNRI, TRXL (noted as renamed BTLG)

Benchmarks / indices

  • IFIX (repeatedly used for comparison and discussed in relation to concentration limits)

Key numbers and thresholds (all as stated)

  • Simulation set size: 31 FIIs
  • Scenario constraint: max 20% per fund
  • “Optimal” minimums (as presented):
    • 7 assets (for the uncapped interpretation / Portfolio 1)
    • With 20% cap: implies ≥5 funds (but the narrative argues “4” still doesn’t hold up)
  • Risk reduction shape:
    • Inflection around ~10
    • Diminishing returns after ~20
    • “Less than 20 is proven to make sense” (diversification logic across studies)
  • Specific negative-month example:
    • Dec 2015 (Portfolio 1): -3.11%
    • Driver: HCRI -5.64% with HCRI ~64% weight
  • Monthly outperformance vs IFIX:
    • Portfolio 1: 50% of months
    • Portfolio 2: 60% of months
  • REIT vs stocks risk reduction:
    • REITs: risk to 39.58% (≈ 60% eliminated)
    • Stocks: ≈ 42.71% eliminated
  • Suggested “ideal region”:
    • ~10–15 (also mentions 8–15; “nine” appears as a cross-study convergence point)

Disclosures / disclaimers

  • The content is described as based on statistical studies/backtests, not purely personal opinion.
  • No explicit “financial advice” disclaimer appears in the subtitles provided.

Presenters / sources mentioned

  • Pedro (friend who suggested the topic)
  • Leo (main presenter)
  • Markowitz (Nobel laureate; Efficient Frontier / Markowitz portfolio selection)
  • Constantina Lecar (2011) (referenced study)
  • Yoro, Luis, and Zuga (2015) (referenced study)
  • “Sharp” / “Sharpe” is mentioned as part of a statistical/risk-adjusted framework, though no specific Sharpe values are provided in the subtitles.

Original video