Institutional Manager · CIK 0001729854
MainStreet Investment Advisors LLC
CHICAGO, IL · File #028-18622
Latest AUM
$695.6M
Positions
159
Top-10 Concentration
49.6%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | iShares MSCI EAFE ETF | 464287465 | -29,585 | -$2.8M | +$1.2M |
| REDUCE | Apple Inc | AAPL | -9,843 | -$2.7M | +$2.6M |
| REDUCE | Microsoft Corp | MSFT | -5,491 | -$2.7M | -$2.6M |
| REDUCE | iShares Core S&P Mid-Cap ETF | 464287507 | -31,403 | -$2.1M | +$507,824 |
| REDUCE | JPMorgan Chase & Co | VYLD | -6,120 | -$2.0M | +$481,017 |
| REDUCE | Alphabet Inc | GOOG | -5,499 | -$1.7M | +$5.6M |
| REDUCE | iShares Core S&P 500 ETF | 464287200 | -2,487 | -$1.7M | +$310,438 |
| REDUCE | Vanguard Short-Term Treasury E | 92206C102 | -28,860 | -$1.7M | -$64,048 |
| REDUCE | Caterpillar Inc | CAT | -2,706 | -$1.6M | +$2.4M |
| REDUCE | Blackrock Inc | BLK | -1,440 | -$1.5M | -$1.8M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025159 pos · $695.6M
- 13F HOLDINGS REPORTQ/E Sep 2025161 pos · $743.8M
- 13F HOLDINGS REPORTQ/E Jun 2025155 pos · $723.0M
- 13F HOLDINGS REPORTQ/E Mar 2025156 pos · $687.3M
- 13F HOLDINGS REPORTQ/E Dec 2024150 pos · $713.4M
- 13F HOLDINGS REPORTQ/E Sep 2024156 pos · $752.7M
- 13F HOLDINGS REPORTQ/E Jun 2024157 pos · $817.3M
- 13F HOLDINGS REPORTQ/E Mar 2024169 pos · $832.6M
- 13F HOLDINGS REPORTQ/E Dec 2023176 pos · $841.2M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 464287507 | 654,846 | $43.2M | 7.60% |
| 2 | iShares MSCI EAFE ETF | 464287465 | 422,804 | $40.6M | 7.14% |
| 3 | Apple Inc | AAPL | 140,101 | $38.1M | 6.70% |
| 4 | Microsoft Corp | MSFT | 70,522 | $34.1M | 6.00% |
| 5 | Vanguard Short-Term Treasury E | 92206C102 | 504,878 | $29.7M | 5.21% |
| 6 | Alphabet Inc | GOOG | 74,147 | $23.2M | 4.08% |
| 7 | JPMorgan Chase & Co | VYLD | 64,722 | $20.9M | 3.67% |
| 8 | iShares Core S&P Small-Cap ETF | 464287804 | 158,609 | $19.1M | 3.35% |
| 9 | Blackrock Inc | BLK | 17,406 | $18.6M | 3.28% |
| 10 | NVIDIA Corp | NVDA | 78,088 | $14.6M | 2.56% |
| 11 | Broadcom Inc | AVGO | 41,076 | $14.2M | 2.50% |
| 12 | Vanguard Intermediate-Term Tre | 92206C706 | 237,182 | $14.2M | 2.50% |
| 13 | Johnson & Johnson | JNJ | 64,224 | $13.3M | 2.34% |
| 14 | AbbVie Inc | ABBV | 55,302 | $12.6M | 2.22% |
| 15 | Caterpillar Inc | CAT | 21,987 | $12.6M | 2.21% |
| 16 | Amazon.com Inc | AMZN | 53,035 | $12.2M | 2.15% |
| 17 | iShares Core S&P 500 ETF | 464287200 | 17,362 | $11.9M | 2.09% |
| 18 | Procter & Gamble Co/The | 742718109 | 76,125 | $10.9M | 1.92% |
| 19 | Vanguard FTSE Emerging Markets | 922042858 | 195,143 | $10.5M | 1.84% |
| 20 | Waste Management Inc | 94106L109 | 45,428 | $10.0M | 1.75% |