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Rydex Series Trust Biotechnology Fund Investor Class: (MF: RYOIX)

(NASDAQ Mutual Funds) As of Jun 8, 2026 06:21 PM ET

$78.57 USD

-0.82 (-1.03%)

Zacks MF Rank

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Zacks Rank Definition
1 Strong Buy
2 Buy
3 Hold
4 Sell
5 Strong Sell

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4-Sell of 5       4  

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Zacks Premium Research for RYOIX

Zacks MF Rank

This is our Mutual Fund rating system that serves as a timeliness indicator for Mutual Fund's over the next 6 months:

Zacks Rank Definition
1 Strong Buy
2 Buy
3 Hold
4 Sell
5 Strong Sell

Zacks Mutual Fund Rank FAQ - Learn more about the Zacks Mutual Fund Rank
Zacks Mutual Fund Rank Home - All Zacks Rank resources in one place
Zacks Premium - The only way to get access to the Zacks Rank

Sell 4
MF Report

Fund Description

The fund invests at least 80% of net assets in U.S.-traded equity securities of biotechnology companies and in derivatives, primarily futures contracts and options on securities, futures contracts, and stock indices. The advisor uses a proprietary quantitative and qualitative methodology with screens for price, liquidity, and tradability, then weights holdings using a proprietary modified capitalization approach, with adjustments for regulatory limits or as deemed appropriate. It may invest significantly in small- to mid-cap biotechnology companies, may use ADRs for foreign exposure, may hold U.S. government securities, and may trade near market close to stay fully invested. Derivatives can create leverage, magnifying volatility and potentially leading to losses exceeding amounts invested.

Load Information

Ticker Max
Load %
Deferred
Load %
Red.
Fee %
12B-1
Fee %
Mgmt
Fee %
Expense
Ratio %
Rydex Biotechnology Inv RYOIX NA NA 0.00 0.00 0.85 1.40

Return Data

Ticker Nav Inception Date % yield 1 year return 2 year return 3 year return
Rydex Biotechnology Inv RYOIX 78.57 4/1/1998 0.00 36.09 12.52 4.09
Rydex Biotechnology Adv RYOAX 61.63 4/1/1998 0.00 35.77 12.24 3.84
Rydex Biotechnology C RYCFX 45.74 3/30/2001 0.00 34.72 11.39 3.06
Rydex Biotechnology A RYBOX 65.68 6/21/2005 0.00 35.75 12.24 3.83

Investment Information

Ticker Minimum Initial Investment ($) Minimum Subsequent Investment ($) Minimum Initial IRA ($) Dividend Frequency
Rydex Biotechnology Inv RYOIX 2500 0 1000 A

Contact Information

Family Rydex
Address Guggenheim Investments, P.O. Box 758567
Topeka, KS 66675
Phone 800 820-0888