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Spencer Waxman 13F portfolio summary

Spencer Waxman of SHANNON RIVER FUND MANAGEMENT LLC has 28 current stock holdings with a reported portfolio value of $524.1M. The portfolio 1 year return is +46.79%. Top holdings include TSEM (16.88%), MRVL (10.65%), LYV (8.57%), ABNB (5.95%), RMBS (5.48%).

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Spencer Waxman

SHANNON RIVER FUND MANAGEMENT LLC
Latest filing: 2026-03-31

Spencer Waxman runs SHANNON RIVER FUND MANAGEMENT LLC and currently holds 28 stock positions, which is fewer than the average of 496 among the investors we track. The portfolio is valued at approximately $524.08M. Their top 5 holdings are various securities, which collectively represent 0.0% of the portfolio's total weight. Spencer Waxman ranks #12 out of 75 investors tracked based on their composite Alpha Score. Their current best-performing position is TSEM (TOWER SEMICONDUCTOR LTD) with returns of +49.45% from their average buy price, held for approximately 10.0 quarters. Over the past year, Spencer Waxman's portfolio at SHANNON RIVER FUND MANAGEMENT LLC has delivered returns of +46.79%. Their 3-year annualized return is +124.79%. Looking at the 5-year horizon, Spencer Waxman has achieved +151.82% annualized returns at SHANNON RIVER FUND MANAGEMENT LLC.

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Top 5 Holdings
No holdings data available
Portfolio Returns
1 Year
+46.79%
#12/75
3 Year
+124.79%
#22/75
5 Year
+151.82%
#9/75

Portfolio Value

$524.08M

Alpha Score

107.9

#12 of 75

Holdings

28

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0 stock holdings

HoldingWeightAvg BuyCurrentReturnQuarter Change