Writing Portfolio and Market Commentary with AI

Quarterly letters, market-volatility notes, "what happened this week" emails — commentary is one of the highest-leverage things an advisor writes, and one of the most time-consuming. A blank page, a deadline, and the pressure to sound both informed and reassuring. AI turns that blank page into a solid draft in minutes. This lesson shows how to do it well — and how to stay on the right side of the rules.

What You'll Learn

• Turning performance numbers into clear, client-friendly commentary
• Writing market-event notes (volatility, rate moves, headlines) that calm rather than alarm
• Adapting one piece of commentary for different audiences and channels
• The compliance lines you must not cross in client communications

Quarterly Commentary From Numbers to Narrative

You have the quarter's facts: how the model portfolios did, what drove returns, what you're watching. Feed the AI the facts and your house view, and ask for the narrative.

You are writing the quarterly client letter for a financial planning firm. Facts for Q[X]: balanced model portfolio returned about +X%; large-cap US stocks up, international roughly flat, bonds slightly positive as yields eased; the biggest contributor was [sector/theme], the biggest drag was [sector/theme]. Our house view: we don't make tactical bets on short-term moves, we stay diversified and rebalance to targets, and we expect continued volatility. Write a ~500-word letter in a calm, plain-English, slightly warm voice. Structure: brief recap of the quarter, what drove results, what we're watching, and a reminder of our long-term approach. Do not predict specific future returns, do not use the words "guarantee" or "guaranteed," and do not give individualized advice — this goes to all clients.

Then refine: "Cut to 350 words." "Add a sentence acknowledging that headlines were noisy this quarter." "Make the closing paragraph a bit warmer." You supply the facts and the judgment; the AI handles the prose.

Market-Event Notes That Reassure

When markets drop or a big headline lands, clients want to hear from you — quickly. AI helps you respond fast without sounding panicked or, worse, making promises.

You are an advisor writing a short note to all clients after a sharp market drop (about X% over a few days) driven by [reason]. Goal: acknowledge it, put it in historical context (markets have weathered many similar episodes), remind clients their plan already accounts for volatility and they hold a cash reserve for near-term needs, and discourage reactive selling — without minimizing how it feels and without predicting a bottom or a rebound. About 200 words, calm and steady. End with an invitation to call if they want to talk.

A few rules that keep these notes safe and effective:

• No predictions. Don't say the market will recover by year-end or that this is "the bottom." You don't know, and saying so creates expectations you'll be held to.
• No guarantees. Strip the word entirely. Diversification, rebalancing, and cash buckets manage risk; they don't eliminate it.
• No individualized advice in a mass communication. "Stay the course" as a general principle is fine; "you specifically should not sell" is individualized advice that doesn't belong in a blast email.
• Acknowledge feelings. "This is uncomfortable" lands better than "don't worry about it."

One Message, Many Channels

You wrote a good quarterly letter. Now you need a shorter email version, a few sentences for the client portal, a LinkedIn post, and talking points for calls. Don't rewrite — repurpose.

Take the quarterly letter above and give me: (1) a 120-word email version with a subject line, (2) a 3-sentence summary for the client portal banner, (3) a LinkedIn post in a professional but approachable voice, no jargon, that shares the long-term-perspective theme without referencing specific client portfolios or returns, and (4) five bullet talking points an advisor can use on calls this week. Keep the compliance constraints from before.

One source, four deliverables, ten minutes.

Tone, Voice, and Sounding Like You

Generic commentary sounds like everyone else's. Give the AI a sample of your past writing — "Here are two of my previous client letters: [paste]. Match this voice: warm, a little understated, occasional plain-spoken analogy, never hype" — and the drafts will start sounding like you. Over time, save a short "voice guide" you can paste into any commentary prompt (you'll formalize this in the Custom GPT lesson).

The Review Step Is Not Optional

Commentary is a client communication, which means it's subject to your firm's review and the SEC Marketing Rule (and FINRA communications rules if applicable). Before anything goes out:

• Check every number against your performance reporting.
• Confirm no predictions, guarantees, or individualized advice slipped in.
• Make sure any forward-looking statement is appropriately hedged ("we expect" with reasons, not "it will").
• Run it through your firm's normal approval process. AI doesn't change that it must be reviewed — only how fast you got to the draft.

Key Takeaways

• Feed the AI the quarter's facts and your house view and let it write the narrative — recap, drivers, what you're watching, long-term approach — then refine for length and tone.
• For market-event notes, move fast but follow the rules: no predictions, no guarantees, no individualized advice in a mass message, and always acknowledge how it feels.
• Repurpose one piece of commentary into an email, a portal blurb, a LinkedIn post, and call talking points instead of rewriting from scratch.
• Give the AI samples of your past writing so drafts sound like you — and never skip your firm's review and the Marketing Rule check, since commentary is a regulated client communication.