> ## Documentation Index > Fetch the complete documentation index at: https://primimarket.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Responsible Trading > Understanding the risks of trading on Primi before you participate. Primi offers perpetual-style derivatives contracts. These are complex financial instruments. Before trading, make sure you understand how they work and the risks involved. ## Primi is a derivatives market Trading on Primi does not give you any interest in the underlying companies. You have no ownership, no equity rights, no claim on dividends or assets, and no voting rights. Your only exposure is to the movement of the index between when you enter and when you exit. ## You can lose money Positions on Primi are marked to market continuously. If the index moves against your position, your position loses value in real time. There is no floor. You can lose the full value of your position. ## Positions have no expiration — but costs accumulate Positions on Primi do not expire, which means you can hold them indefinitely. However, when the market price of your position diverges from the underlying index reference price, a funding cost applies continuously. Holding a position that is significantly misaligned with the reference index carries an ongoing cost that can erode your position over time, even if the index is flat. ## Momentum can reverse The Primi index measures whether a company's secondary market momentum is accelerating or decelerating relative to its own history. Momentum can reverse quickly. A rising index does not imply it will continue rising. A company with strong fundamental performance can still have a falling Primi index if recent momentum falls below its own historical baseline. ## Underlying data is from secondary markets The reference prices underlying Primi indices are derived from bid-ask quotes and verified transactions on pre-IPO secondary market platforms. These markets are less liquid than public equity markets, and quote activity can be sparse. The filters described in [Data](/methodology/data) are designed to maintain index quality, but periods of thin data are possible. Decay mechanics apply when data is absent for extended periods. If you have questions about whether Primi is appropriate for you, consult a qualified financial advisor before trading.