Episode Summary
Executive Summary: The episode dissects the late-2018 market selloff, arguing that simplistic explanations—Mnuchin’s bank-liquidity tweet, algos, the Fed, or passive investing—are mostly narratives layered onto a complex drawdown driven by price, sentiment, and macro uncertainty. The hosts emphasize that bottoms and recoveries are unpredictable, valuations depend on future earnings, and investors should be wary of overconfidence, low-ball offers, and media sensationalism.
Main Topics: Market selloff narratives and Mnuchin’s tweet (Priority: 5/5): The hosts debate whether Stephen Mnuchin’s public reassurance to banks helped trigger or amplify the Christmas Eve selloff, concluding it was bad timing but not the true cause of the downturn. Algorithms, volatility, and market structure (Priority: 5/5): They push back on Wall Street Journal framing that computerized trading is the main driver of volatility, arguing that historical volatility long predates algos and that market structure may exacerbate moves without causing them. Sentiment, psychology, and investing behavior (Priority: 4/5): They discuss bearish sentiment surveys, long TD Ameritrade wait times, and the circular nature of panic selling, emphasizing how money and market pain alter investor behavior. Bottoms, corrections, and statistical limits (Priority: 5/5): The hosts examine historical drawdowns, bear-market bottoms, and forward-return stats, concluding that patterns are inconsistent and averages can be misleading because investors only live through one path. Valuation and earnings dependence (Priority: 4/5): They consider forward P/E data for large- and small-cap indexes, arguing that stocks may be cheap if earnings hold up, but those valuations become irrelevant if a slowdown emerges. Endowments, incentives, and long-run stewardship (Priority: 3/5): The episode critiques Ivy League endowment comparisons, noting that performance often matters less than fundraising capacity and that frequent CIO turnover likely hurts results. Personal finance anecdotes and consumer behavior (Priority: 3/5): The hosts touch on apartment selling, low-ball real estate offers, Robinhood stock-picking behavior, and minivans vs. SUVs, using these examples to illustrate psychology, practicality, and investor identity.
Key Arguments: The market did not need Mnuchin’s tweet to explain the selloff; declines were already underway and multiple forces were at work. Algorithmic trading can amplify volatility, but it is not a sufficient explanation for market behavior; historical volatility existed long before computers. Investor sentiment data should be treated cautiously because surveys reflect what people say, not necessarily what they do. Market bottoms are not formulaic; some recover in V-shapes, others retest, languish, or rebound and fade. Valuation only matters relative to future earnings and macro conditions; cheap stocks can become cheaper if growth slows. Averages and backtests can mislead because the one bad cycle is what matters most to actual investors. Money and emotions dramatically change decision-making, so market calls are easier in theory than in practice. Position sizing is crucial; conviction alone is not enough, and adding to losers only makes sense within a disciplined risk framework. Some media and commentary intentionally use sensational or simplistic narratives because they generate engagement, even when the explanation is weak.
Data Points: Dow drop after Mnuchin tweet: 653 points, or 2.9% - The next day after Mnuchin’s reassuring bank tweet; the index closed on its lows. Dow drawdown at the time: 16% - The market had already experienced a substantial drawdown before the tweet. Frequency of Dow declines closing on lows: 6 times since 1970 - Days when the Dow fell 2.9% and closed directly on its lows. AAII bearish sentiment: Above 50% - Bearish sentiment reading cited as the highest since April 2013. TD Ameritrade hold time: 35 minutes - One host tested reported wait times by calling the brokerage himself. SPX peak-to-trough correction length pre-1995: 214 days average - Comparison of all double-digit corrections before 1995. SPX peak-to-trough correction length post-1995: 186 days average - Comparison of all double-digit corrections after 1995. Bear market length pre-1995: 318 days average - Average duration of bear markets before 1995. Bear market length post-1995: 349 days average - Average duration of bear markets after 1995. Correction length pre-1995: 115 days average - Average duration of corrections before 1995. Correction length post-1995: 71 days average - Average duration of corrections after 1995. Mutual fund redemptions: $56 billion - Outflows in the week ended December 19, the largest since October 15, 2008. U.S. mutual and ETF inflows in first 11 months: $237 billion - Down 62% from the year-ago period, the steepest decline since 2008. SP 500 one-day rebound: 5% - Referenced as a sharp single-day recovery during the volatility. SP 500 drawdown-to-new-low speed: 59 trading days - New all-time high to new 52-week low on December 17; among the fastest in history. SP 500 forward PE: Less than 12x - Large-cap earnings index valuation cited as reasonable if earnings hold up. SP 500 trailing PE: Less than 13x - Trailing valuation cited alongside forward multiples. WisdomTree small-cap index valuation: Back at 2009 levels - Used to illustrate that small caps looked especially beaten down. Mutual and ETF inflows decline: 62% year-over-year - First 11 months of the year compared with the prior year. SP 500 positive follow-through after 10% down quarter: 79% positive next quarter - Bespoke stat on forward returns after quarters in which the index fell 10%. SP 500 companies vs stocks: 500 companies / 505 stocks - Explanation for why the index has 505 stock listings due to multiple share classes. Harvard/Cornell endowment ranking: Bottom of the pack over 10 years - Observation from the endowment return quilt chart. General Motors pension contributions vs dividends: $55 billion vs $13 billion - Over a 15-year period ending in 2006, pensions exceeded dividends by more than 4x. Senior citizens count: 38 million rising to 72 million - Demographic stat from the pension crisis discussion. Age 65+ share by 2030: 1 in 5 Americans - Projected share of the U.S. population over age 65. Robinhood investors buying Facebook after earnings: 61,000 - Millennials added FB after its earnings disappointment and stock drop. Apartment low-ball offer: About 17% below asking - A personal anecdote about real estate pricing and market timing. Bird Box ratings: IMDb 6.8; Rotten Tomatoes 65%; host score 6.4 - The hosts reviewed the Netflix film and compared scores.
Pivotal Quotes: "When the computers start buying, everyone buys. When they sell, everyone sells with little to back it up." — Wall Street Journal article quoted by the hosts: Used to criticize simplistic claims that algos are the primary source of volatility. "It either springs back or it breaks, and we don't know when." — John Borman (quoted by the hosts): Describing how stretched markets and analysis can become during extreme moves. "The market doesn't always react like you want it to or you think it should." — Ben Carlson / Michael Batnick: Core investing takeaway about humility and the limits of prediction.
Implications: Investors should expect messy, non-linear market behavior and avoid overfitting narratives to every move. Risk control, humility, and attention to fundamentals matter more than headline explanations or backtest certainty.
About Animal Spirits Podcast
Animal Spirits is a show about markets, life, and investing. Join Michael Batnick and Ben Carlson as they talk about what they're reading, writing, listening to and watching. Look for new episodes every Wednesday morning. See our disclosures here - https://ritholtzwealth.com/podcast-youtube-disclosures/