According to Mendelow's Stakeholder Matrix, stakeholders with high interest but low power should be managed by keeping them informed. These stakeholders are invested in the outcome but lack the influence to change it, so keeping them updated helps in maintaining their support and managing expectations without intensive resources or prioritization. This approach aligns with CIPS guidance on stakeholder management in negotiation planning.

Investors or shareholders who have high level of influence but low interest belong to 'Keep satisfied' quadrant of Mendelow's Stakeholder Matrix.
You may read 2 versions from L4M1 and L4M5 here:
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LO 1, AC 1.1

Acollaborative win-win approachfocuses on mutual benefit and long-term value creation. This strategy is especially effective in strategic partnerships where trust, information sharing, and problem-solving are emphasized over competition.
"The collaborative win-win approach aims to create outcomes where both parties gain. This strengthens the relationship and leads to sustainable agreements built on trust and transparency." (L4M5 Commercial Negotiation, 2nd edition, Section 1.1 - Win-Win Negotiation Strategy)

Negotiation variables such as price or contract length, etc are that can be traded with TOP in a negotiation.
The more variables you can identify, the better. The more variables you can identify and articulate, the lower the chances of the negotiation reaching deadlock as more possibilities are facilitated regarding more creative solutions.
Below are examples of negotiation tradeables in buying professional services:
LO 2, AC 2.3

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If interest rate are too low and credit is too, cheap rates can fund a spending boom with consumers and businesses buying (investment) more than they can afford to pay back.