Mesirow Financial Investment Management portfolio
Type not verifiedPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Jul 22, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Mesirow Financial Investment Management reported a $6.4 bn portfolio of 527 companies (529 positions, counting each share class separately) to the SEC as of the end of Q2 2026. Its largest positions are BRK/B, GOOG, AAPL.
Sections with a free account
What changed this quarter
359 positions with a change (32 new, 159 added to, 147 trimmed, 21 sold); also, 2 entered through an IPO, 3 exited through an acquisition or merger, 2 entered through a spin-off. 5 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Investment Managers SER Tr I−51%fewer sharesReduced2.6% → 1.4%
- iShares Core S&P Midcap ETF−40%fewer sharesReduced2.3% → 1.5%
- iShares Russell Mid-cap ETF−51%fewer sharesReduced1.8% → 1.0%
- Microsoft−31%fewer sharesReduced2.7% → 1.8%
- iShares Msci Eafe ETF−49%fewer sharesReduced1.1% → 0.6%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- Berkshire HathawayBRK/B · BRK/A8.1%
- AlphabetGOOG · GOOGL5.2%
- AppleAAPL4.6%
- Vaneck ETF TrustMOAT4.3%
- iShares Core S&P Small-cap E ETFIJR3.8%
- iShares Core S&P 500 ETFIVV2.9%
- iShares Core S&P Total U.s ETFITOT2.8%
- Vanguard S&P 500 ETFVOO2.4%
- MicrosoftMSFT1.8%
- JPMorgan ChaseJPM1.6%
- State Str Spdr S&P 500 ETF TSPY1.5%
- Amazon.comAMZN1.5%
- iShares Core S&P Midcap ETFIJH1.5%
- CaterpillarCAT1.5%
- Vanguard Total International Stock ETFVXUS1.5%
Portfolio by sector
- ● No sector 52%
- ● Financials 14%
- ● Information Technology 11%
- ● Communication Services 6%
- ● Industrials 5%
- ● Health Care 4%
- ● Consumer Discretionary 3%
- ● Consumer Staples 2%
- ● Energy 2%
- ● Materials 1%
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Type not verified: we have not assigned a type because we found no document that is enough to tell. Most 13F filers are in this situation: we only review in depth those that meet the portfolio criteria.
Not counted as a concentrated manager: its portfolio is not within 5 to 100 positions; its top 10 positions are under 45%; more than 20% is ETFs. Its portfolio is shown all the same, but it is left out of manager counts, the consensus and the ranking. How this is decided
Managers of a similar size
A 13F portfolio value between a third and three times this one, whatever the type of filer. It is not a comparison of what they hold.
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- Reaves W HInvestment firm · $6.6 bn
- Soros Fund Management$6.1 bn
- Disciplined Growth InvestorsInvestment firm · $5.9 bn