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 Outstanding nominal value as of the current date

Average price of a bond, in % of face value

The current yield indicates the ratio of the accrued coupon to the current market price of the bond. It can be used in cases where attachments are considered for a short period of time. In this situation, the change in the market price can sometimes be neglected.

Bond duration is a way of measuring how much bond prices are likely to change if and when interest rates move.

Effective yield to maturity. It considers both coupon income and profit/loss due to the difference between the purchase price and the repayment price. Effective yield shows the investor the return on invested funds with reinvested coupons and depreciation.

Listing level — stock exchange assessment of securities reliability.

The ratio of the annual coupon to the "dirty" price of the bond, including the accrued interest. This type of yield can be used in the case of short-term investments, when the investment horizon is within one coupon period.

Average purchase price of a bond, in % of face value

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Up to 2 years - short-term, up to 5 years - mid-term, more than 5 years - long-term

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Coupon yield % per annum of nominal value (coupon amount per year/nominal value)

 Simple yield to maturity. It considers both coupon income and profit/loss due to the difference between the purchase price and the repayment price. Simple yield shows the investor the return on invested funds without reinvested coupons.

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The fund expense ratio is the annual fee expressed as a percentage of a mutual fund or ETF's average assets, covering management, administrative, and other operational costs. It directly reduces investors' returns.

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Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer's disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer's disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer's disease. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.

Prothena Corporation plc

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