Institutional Manager · CIK 0000918893
ROSENBLUM SILVERMAN SUTTON S F INC /CA
San Francisco, CA · File #028-04082
Latest AUM
$432.2M
Positions
80
Top-10 Concentration
50.7%
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 |
|---|---|---|---|---|---|
| ADD | NETFLIX INC | NFLX | +170,483 | +$16.0M | -$21.1M |
| NEW | ZILLOW GROUP INC | Z | +102,645 | +$7.0M | $0 |
| REDUCE | NVIDIA CORPORATION | NVDA | -18,512 | -$3.5M | -$21,651 |
| ADD | SERVICENOW INC | NOW | +21,490 | +$3.3M | -$4.2M |
| REDUCE | ZOETIS INC | ZTS | -24,620 | -$3.1M | -$706,306 |
| ADD | VANGUARD SCOTTSDALE FDS | 92206C870 | +24,990 | +$2.1M | -$32,476 |
| ADD | JANUS DETROIT STR TR | 47103U852 | +40,995 | +$1.9M | +$3,963 |
| REDUCE | ADOBE INC | ADBE | -3,816 | -$1.3M | -$63,642 |
| ADD | INVESCO EXCHANGE TRADED FD T | IVZ | +82,025 | +$1.2M | -$35,167 |
| ADD | J P MORGAN EXCHANGE TRADED F | 46654Q716 | +19,715 | +$1.1M | -$12,404 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202580 pos · $432.2M
- 13F HOLDINGS REPORTQ/E Sep 202578 pos · $437.9M
- 13F HOLDINGS REPORTQ/E Jun 202577 pos · $412.5M
- 13F HOLDINGS REPORTQ/E Mar 202575 pos · $362.9M
- 13F HOLDINGS REPORTQ/E Dec 202474 pos · $398.1M
- 13F HOLDINGS REPORTQ/E Sep 202477 pos · $391.0M
- 13F HOLDINGS REPORTQ/E Jun 202475 pos · $373.4M
- 13F HOLDINGS REPORTQ/E Mar 202474 pos · $353.1M
- 13F HOLDINGS REPORTQ/E Dec 202371 pos · $293.7M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 252,231 | $47.0M | 11.26% |
| 2 | MICROSOFT CORP | MSFT | 47,139 | $22.8M | 5.46% |
| 3 | AMAZON COM INC | AMZN | 96,456 | $22.3M | 5.33% |
| 4 | VISA INC | V | 57,668 | $20.2M | 4.84% |
| 5 | META PLATFORMS INC | META | 30,122 | $19.9M | 4.76% |
| 6 | ALPHABET INC | GOOG | 61,241 | $19.2M | 4.59% |
| 7 | NETFLIX INC | NFLX | 189,535 | $17.8M | 4.26% |
| 8 | COSTCO WHSL CORP NEW | 22160K105 | 17,962 | $15.5M | 3.71% |
| 9 | SHARKNINJA INC | SN | 122,249 | $13.7M | 3.28% |
| 10 | CINTAS CORP | CTAS | 71,034 | $13.4M | 3.20% |
| 11 | ALNYLAM PHARMACEUTICALS INC | ALNY | 33,180 | $13.2M | 3.16% |
| 12 | ALPHABET INC | GOOG | 38,761 | $12.2M | 2.91% |
| 13 | REDDIT INC | RDDT | 48,698 | $11.2M | 2.68% |
| 14 | THERMO FISHER SCIENTIFIC INC | TMO | 18,863 | $10.9M | 2.62% |
| 15 | JANUS DETROIT STR TR | 47103U852 | 239,165 | $10.9M | 2.62% |
| 16 | SALESFORCE INC | CRM | 40,984 | $10.9M | 2.60% |
| 17 | VANGUARD SCOTTSDALE FDS | 92206C870 | 115,200 | $9.6M | 2.31% |
| 18 | INSULET CORP | PODD | 33,805 | $9.6M | 2.30% |
| 19 | J P MORGAN EXCHANGE TRADED F | 46654Q716 | 157,540 | $8.5M | 2.04% |
| 20 | JPMORGAN CHASE & CO. | VYLD | 23,509 | $7.6M | 1.81% |