SEI Investments Company (SEIC)
SEIC moved a median of +0.07% 30 minutes after news, and +0.07% by the close. How SEIC actually reacts to news — the realized, point-in-time move the market made, measured across 450 labeled events over the last three years with zero look-ahead.
SEIC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.01% | 52% | 448 |
| 30-min | +0.07% | 57% | 449 |
| 60-min | +0.11% | 56% | 449 |
| to close | +0.07% | 54% | 444 |
| Middle 50% of SEIC reactions | -0.26% to +0.38% |
|---|---|
| Median reaction (30-min) | +0.07% |
| Measured reactions | 450 |
Half of all SEI Investments Company news events land between -0.26% and +0.38% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How SEIC reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 24 | +0.27% | 63% | -0.02% |
| Rating reiterations | 78 | +0.06% | 56% | +0.38% |
| Price-target raises | 31 | +0.03% | 58% | +0.35% |
| Price-target cuts | 14 | +0.20% | 71% | -0.05% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how SEIC ranks against every other measured name →
That’s how SEIC usually reacts — get an email when it moves on news →Email me when SEIC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SEIC's baseline. Nothing else.
Recent SEIC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| SEI Appoints Kristie Edling-Day as Chief Information Officer | Press release | PR Newswire | -0.82% | -0.40% | |
| SEI to Announce Third-Quarter 2026 Earnings on Wednesday, October 21, 2026 | Press release | PR Newswire | +0.32% | +1.16% | |
| SEI Integrates with ICE ETF Hub to Strengthen ETF Order Management Capabilities | Press release | PR Newswire | -0.83% | -0.75% | |
| SEI Opens Singapore Office to Support Growing Asset Management Sector in Asia | Press release | PR Newswire | -0.13% | -0.82% | |
| SEI Opens Singapore Office to Support Growing Asset Management Sector in Asia | Press release | PR Newswire | -0.13% | -0.82% | |
| SEI Enhances Integrated Tax Management Capabilities for Greater Portfolio Flexibility and After-Tax Outcomes | Press release | PR Newswire | -0.67% | -1.72% | |
| SEI Research Indicates 71% of Wealthy Investors Offer Advisors an Untapped Opportunity to Manage More of Their Assets | Press release | PR Newswire | +0.15% | -0.39% | |
| Form N-PX SEI INVESTMENTS CO For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | -0.06% | +0.30% | |
| Form 13F-HR SEI INVESTMENTS CO For: Jun 30 | SEC filing · Form 13F-HR | SEC EDGAR | +0.01% | -0.23% | |
| SEI Expands Advisor Services Ecosystem with AI Assistant Zocks | Press release | PR Newswire | +0.20% | +1.31% | |
| SEI Launches ANGU ETF, Bringing Factor Research to Traditional Index Exposure | Press release | PR Newswire | -0.13% | +0.14% | |
| WTW Investments and SEI Partner to Expand Private Markets Solutions for Defined Contribution Plans | Press release | PR Newswire | +0.24% | +0.37% | |
| Form 10-Q SEI INVESTMENTS CO For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.07% | +0.41% | |
| Form 8-K SEI INVESTMENTS CO For: Jul 22 | SEC filing · Form 8-K | SEC EDGAR | -3.67% | -5.27% | |
| SEI Reports Second-Quarter 2026 Financial Results | Press release | PR Newswire | -3.67% | -5.27% | |
| SEI Expands ETF Platform with SEI QiM U.S. Equity Factor Allocation Active ETF (SEUS) | Press release | PR Newswire | -0.06% | -1.22% | |
| SEI to Announce Second-Quarter 2026 Earnings on Wednesday, July 22, 2026 | Press release | PR Newswire | -0.71% | -1.19% | |
| SEI Expands SEC-Registered Transfer Agency | Press release | PR Newswire | +0.50% | +1.29% | |
| SEI Canada Makes Changes in Risk Ratings | Press release | Canada Newswire | -0.25% | -0.59% | |
| Form 11-K SEI INVESTMENTS CO For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.10% | -1.99% | |
| Rob Wrzesniewski to Lead Technology Enablement and Integration Across Stratos and SEI Asset Management Platforms | Press release | PR Newswire | -0.25% | -0.79% | |
| SEI Appoints Matt Provencher as Global Head of Enterprise Professional Services | Press release | PR Newswire | -0.54% | -2.73% | |
| SEI Introduces Technology and AI to Boost Investment Manager Efficiency | Press release | PR Newswire | +0.08% | +0.33% | |
| SEI Names Sneha Shah Chief AI Strategist, Expands Enterprise AI and Data Leadership | Press release | PR Newswire | +0.43% | +1.47% | |
| Form 8-K SEI INVESTMENTS CO For: May 27 | SEC filing · Form 8-K | SEC EDGAR | -0.25% | +0.19% | |
| SEI Appoints Nathan Shetty as Chief Investment Officer | Press release | PR Newswire | -0.02% | -0.26% | |
| SEI Declares Dividend of $0.52 per Share | Press release | PR Newswire | -0.47% | -1.08% | |
| SEI to Present at William Blair and Morgan Stanley Conferences | Press release | PR Newswire | +0.27% | -1.32% | |
| SEI Converts $1 Billion Mutual Fund Into High Yield Bond & Alternative Credit ETF (LEND) | Press release | PR Newswire | -0.49% | -0.97% | |
| Stratos Completes Acquisition of 11 Partner Practices Totaling Approximately $4.8 Billion in Client Assets | Press release | PR Newswire | -0.15% | -1.40% | |
| Form 13F-HR SEI INVESTMENTS CO For: Mar 31 | SEC filing · Form 13F-HR | SEC EDGAR | -0.15% | -1.40% | |
| SEI and Carlyle Enhance Partnership to Expand Private Market Access Across Wealth and Retirement Channels | Press release | PR Newswire | +0.06% | +0.57% | |
| Form 10-Q SEI INVESTMENTS CO For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | +0.78% | |
| Form 8-K SEI INVESTMENTS CO For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | +1.53% | +2.14% | |
| SEI Reports First-Quarter 2026 Financial Results | Press release | PR Newswire | +1.53% | +2.14% | |
| Form ARS SEI INVESTMENTS CO For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.60% | -1.47% | |
| Form DEF 14A SEI INVESTMENTS CO For: May 27 | SEC filing · Form DEF | SEC EDGAR | +0.60% | -1.47% | |
| SEI Launches Digital Onboarding Solution for Collective Investment Trusts | Press release | PR Newswire | +0.33% | +1.04% | |
| SEI to Announce First-Quarter 2026 Earnings on Wednesday, April 22, 2026 | Press release | PR Newswire | +0.70% | +1.42% | |
| Huntington National Bank Selects the SEI Wealth Platform? | Press release | PR Newswire | -0.72% | +0.31% | |
| Ranchland Capital Partners Selects SEI to Support Alternative Funds | Press release | PR Newswire | +0.34% | -2.24% | |
| SEI Engages IBM to Accelerate Enterprise Transformation Through Agentic AI | Press release | PR Newswire | +0.13% | +1.75% | |
| Form 8-K SEI INVESTMENTS CO For: Mar 02 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | +2.81% | |
| Pravati Capital Partners with SEI, Provides Advisors with Expanded Access To Litigation Finance as Alternative Investment | Press release | Business Wire | — | — | |
| Form 10-K SEI INVESTMENTS CO For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.27% | +0.27% | |
| Graphene Launches Authorised Investment Platform for Alpha Investment Office | Press release | Business Wire | -0.67% | -2.85% | |
| SEI to Present at Raymond James 47th Annual Institutional Investors Conference | Press release | PR Newswire | -0.67% | -2.85% | |
| Form 13F-HR SEI INVESTMENTS CO For: Dec 31 | SEC filing · Form 13F-HR | SEC EDGAR | +0.20% | +2.25% | |
| SEI to Present at UBS Financial Services Conference | Press release | PR Newswire | -2.22% | +0.84% | |
| TIFIN Give Partners with SEI to Deliver White-Labeled Donor-Advised Fund Solutions to Bank and Trust Clients | Press release | PR Newswire | -0.60% | -0.77% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SEIC section they belong to.
Where else SEIC is measured.
SEIC earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Amalgamated Financial Corp. (AMAL) | 452 | +0.09% | 53% |
| Onex Corp (ONEX_TSE) | 450 | +0.31% | 72% |
| CNO Financial Group, Inc. (CNO) | 449 | +0.12% | 62% |
| Stock Yards Bancorp, Inc. (SYBT) | 449 | 0.00% | 49% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Financial Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is SEI Investments Company's median reaction calculated?
Every labeled SEIC news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 450 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 57% of SEIC's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does SEIC's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.