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WITTENBERG INVESTMENT MANAGEMENT, INC.

Location
CARLISLE, MA
Portfolio Value
Small $255,196,985
Diversification
Diversified
Filing Date
Global Rank
#3,712 / 8,607 ▲ 398 · as of Mar 2026
Top Industry
Entertainment 22.2%
3Y Alpha vs SPY
-0.5%
Period ended 3 months ago
Filed May 14, 2026 · 58d
25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio
+73.5%
SPY
+75.9%
Annualised alpha
-0.6%
Max drawdown
−16.7%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

63 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
19.1%
−4.3 pts
Top 5
55.2%
−7.9 pts
Top 10
71.7%
−4.7 pts
HHI
787
Jun 2023 → Mar 2026 · range 787 – 1,437
Diversified−227

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Communication Services 39.1% $99,902,801
Financial Services 25.4% $64,781,098
Technology 15.7% $40,047,275
Consumer Cyclical 12.4% $31,548,587
Energy 4.0% $10,160,844
Healthcare 1.3% $3,233,743
Consumer Defensive 0.8% $2,152,901
Industrials 0.7% $1,753,922
Basic Materials 0.4% $989,625
Real Estate 0.2% $626,189

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
14 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
16 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
6 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
3 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
63 positions · $255,196,985 total · as of Mar 31, 2026
Showing 1–50 of 63 positions by value · page 1 of 2
Ticker Company Shares Value (USD) % of Portfolio History