RIA

LATHROP INVESTMENT MANAGEMENT CO — 13F Portfolio

Springfield, MA SEC Registered Investment Advisor filing as an institutional investment manager under CIK #0001124841 Mixed CIK: 0001124841
13F Score ?
7
3Y · Top 10 · Mgr Wt
13F Score ?
9
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$534M
AUM
-4.21%
2026 Q1
+3.04%
1-Year Return
+37.07%
Top 10 Concentration
+5.64%
Turnover
-3.05%
AUM Change
Since 2005
First Filing
83
# of Holdings

Fund Overview

13F Filed: 2026-05-12

As of 2026 Q1, Lathrop Investment Management Co manages $534M in reported 13F assets , holds 83 positions with +37.07% top-10 concentration , and delivered a 1-year return of +3.04% on its disclosed equity portfolio. Filing 13F reports since 2005. View full holdings list →

About

Investment Strategy

Analytics Summary

Risk Profile

Official 13F Filings — SEC EDGAR Key personnel and Fund Overview may contain mistakes

Activity Summary — 2026 Q1

Q1 2026 13F Filed: May 12, 2026

Top Buys

% $
Stock % Impact
+1.16%
+0.85%
+0.60%
+0.59%
+0.55%
+0.50%

Top Sells

% $
Stock % Impact
-1.22%
-0.80%
-0.61%
-0.60%
-0.51%
-0.46%

Top Holdings

2026 Q1 Top 6 mgr. wt. · 2026 Q1-4.21%
Stock %
5.20%
3.90%
3.81%
3.77%
3.64%
3.46%
View All Holdings

Activity Summary

Latest
Market Value $534K
AUM Change -3.05%
New Positions 1
Increased Positions 20
Closed Positions 3
Top 10 Concentration +37.07%
Portfolio Turnover +5.64%
Alt Turnover +7.22%

Sector Allocation Trends

Quarterly History
Free View: Last 10 Quarters. Subscribe to see full history

Holdings Analysis

Size: % of Portfolio Color: Last Full-Quarter Return No data
Free: 10 quarters

Positions Dynamics

Visualizing Top 20 holdings weight history over the last 10 quarters.

Portfolio Analytics — Latest

LATHROP INVESTMENT MANAGEMENT CO risk dashboard covering volatility, beta, value-at-risk, drawdowns, concentration, factor tilts, benchmark comparison, and stress testing for the latest disclosed portfolio.

Risk access
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Real-time Analytics
High-Conviction Alpha
AAPL 92.4
NVDA 88.1
MSFT 74.3
Strategy Guardian
Style Drift 0.12
Sector Rotation 0.38

Tracking institutional benchmark deviation

Scenario Lab
2008 GFC -32.4%
Covid-19 -18.1%
2022 Bear -24.7%
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Real conviction scores for every holding  ·  Strategy Guardian alerts  ·  Live Scenario Lab stress tests
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Best Strategy vs. Benchmarks

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Returns
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Latest Quarter
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1-Year Return
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Ann. Return
Risk
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Std Deviation
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Max Drawdown
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Beta vs SPY
Quality
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Sharpe
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Sortino
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Win Rate
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Payoff Ratio
Edge Metrics Last 10 quarters only
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Alpha annualized
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Up Capture
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Down Capture

Strategy Backtester: LATHROP INVESTMENT MANAGEMENT CO

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Find the best N! Test multiple portfolio sizes at once to discover the optimal configuration.

Risk insights! Identify periods when the fund lagged the benchmark – critical for timing entries.

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Avg. Return

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Underperformance Analysis — Top 10 Holdings vs SPY

Backtesting LATHROP INVESTMENT MANAGEMENT CO's top 10 holdings against SPY identified 62 underperformance periods. Worst drawdown: 2024-02 – 2024-12 (-20.4% vs SPY, 11 quarters). Currently underperforming.

Avg. lag: -4.6% vs SPY Avg. duration: 2.1 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of LATHROP INVESTMENT MANAGEMENT CO's top holdings contributed to portfolio returns quarter by quarter. Strongest recent contributors inside the last 5 years of the quarterly Top 10 backtest window: WMT (2022 Q3 – 2025 Q4, +12.4 pts), MSFT (2021 Q2 – 2025 Q4, +5.6 pts), MLM (2021 Q2 – 2025 Q4, +5.4 pts), AAPL (2022 Q4 – 2025 Q4, +5.0 pts), ADI (2021 Q2 – 2025 Q4, +4.7 pts) .

Strategy ann.: 7.2% SPY ann.: 11.0% Period: 2006–2026
Best Recent Contributors — Last 5Y
3 of 5 recent top contributors lagged SPY, which means even some of this fund's best return drivers still failed to beat a simple index over the same window.
2022 Q3 – 2025 Q4 • 14Q in Top 10 Beat SPY
WMT
+171%
SPY
+104%
Contrib
+12.4%
2021 Q2 – 2025 Q4 • 19Q in Top 10 Lagged SPY
MSFT
+45%
SPY
+81%
Contrib
+5.6%
2021 Q2 – 2025 Q4 • 18Q in Top 10 Lagged SPY
MLM
+54%
SPY
+67%
Contrib
+5.4%
2022 Q4 – 2025 Q4 • 12Q in Top 10 Lagged SPY
AAPL
+59%
SPY
+78%
Contrib
+5.0%
2021 Q2 – 2025 Q4 • 16Q in Top 10 Beat SPY
ADI
+53%
SPY
+48%
Contrib
+4.7%
Stock return (green = beat SPY)   Stock return (red = lagged SPY)   SPY same period   Cumulative contribution during the last 5 years of the quarterly Mn-weighted Top 10 strategy

Frequently Asked Questions

What does Lathrop Investment Management Co invest in?
While LATHROP INVESTMENT MANAGEMENT CO does not widely publicize a branded house view, its pattern of U.S.‑listed holdings is consistent with a fundamentally driven, long‑only value and core‑equity discipline. 13F filings commonly show diversified portfolios of U.S. large‑ and mid‑cap issuers, with recurring exposure to sectors such as financials, industrials, consumer staples, healthcare, and select consumer and energy names. The holdings list typically features established companies with meaningful free‑cash‑flow generation, defensible competitive positions, and a history of distributing cash to shareholders via dividends and/or repurchases, rather than speculative early‑stage growth stories. Security selection appears to be bottom‑up and business‑focused. Emphasis on balance‑sheet strength, earnings stability, and valuation suggests that the firm seeks to buy durable franchises at prices that offer an attractive relationship between cash‑flow prospects and risk, rather than chasing momentum or highly thematic trades. International exposure, when present in the 13F record, is usually via U.S.‑listed multinationals or American Depositary Receipts. Portfolios are constructed as conviction‑weighted but diversified lists of individual equities. The number of positions and the relatively stable names across filings point to low turnover: holdings are often maintained over multiple years as long as the underlying investment thesis remains intact and valuation does not become excessively stretched. Changes in the book tend to be incremental, reflecting ongoing research, corporate events, or valuation‑driven trims and additions. Within this platform, the **13F Portfolio Composition** view allows allocators to decompose LATHROP INVESTMENT MANAGEMENT CO’s disclosed positions by sector, market‑capitalization band, and issuer concentration. Coupled with the Portfolio Simulator and Backtesting Service, users can construct a historical replication of this long‑equity sleeve, helping to relate the firm’s fundamental, income‑aware philosophy to observable capital trajectories through time, while remembering that fixed income and other non‑reportable assets are outside the 13F dataset.
What is Lathrop Investment Management Co's AUM?
Lathrop Investment Management Co reported $534M in 13F assets as of 2026 Q1. Note: 13F AUM reflects only long equity positions reported to the SEC and may differ from total assets under management.
How concentrated is Lathrop Investment Management Co's portfolio?
Lathrop Investment Management Co holds 83 disclosed positions. The top 10 holdings represent +37.07% of the reported portfolio, indicating a diversified investment approach.
How to track Lathrop Investment Management Co 13F filings?
Track Lathrop Investment Management Co's quarterly filings on SEC EDGAR or on this page — data is updated within days of each filing deadline. Subscribe to 13Foresight for position-change alerts.

Disclaimer: 13Foresight is not a registered investment adviser, broker-dealer, or financial planner. All information on this site is provided solely for informational and educational purposes and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Portfolio backtests shown on this page are hypothetical and simulated — they do not represent actual trading results and were constructed with the benefit of hindsight. Actual results would differ materially. 13F filings disclose only long equity positions valued above $10,000, submitted up to 45 days after quarter-end; they do not capture short positions, options, bonds, cash, private investments, or non-U.S. securities. A fund's backtest performance may not reflect its actual returns, as managers frequently generate alpha through strategies not visible in 13F data. Past performance is not indicative of future results. All data sourced from public SEC EDGAR filings. Use at your own risk. Full Terms of Use.

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