Period
Q3 2018
Calendar quarter covered by the filing.
SIMPLEX TRADING, LLC portfolio
Q3 2018 · Holdings as of · Filed · $1,706,473,000 reported in Form 13F
What changed in Q3 2018?
Comparable share positions since Q2 2018.
- New
- 715
- Increased
- 603
- Reduced
- 569
- Exited
- 729
44 positions with incomplete comparison or price data excluded.
Largest disclosed changes
-
78,897 shares
+$158,030,611 estimated
Weight +9.45 percentage points
-
371,806 shares
+$69,077,000 estimated
Weight +4.05 percentage points
-
349,184 shares
+$57,426,358 estimated
Weight +3.12 percentage points
-
-220,653 shares
-$49,804,927 estimated
Weight -2.63 percentage points
-
-231,691 shares
-$43,245,000 estimated
Weight -2.81 percentage points
Estimates use share changes and filing prices. They are not trade proceeds. Options and principal positions are excluded.
Compare with Q2 2018Holdings
| Sym | Weight | Trade Impact | Company | Class | Share Change | Activity | Value change | SEC-reported value | SEC-reported price | Shares | Principal |
|---|
Filing details and SEC source
- Portfolio date
- 30 Sep 2018
- Reported 13F value
- $1,706,473,000
- Reported 13F holdings
- 1,954
- Largest 13F holdings
-
AMZN META QQQ NFLX NVDA GOOG GS BA C BIDU SQ IWM
+8 more
FXI ROKU GOOGL UNP MPC MU JD CAT - What this filing covers
-
13F holdings
1,954Parsed equity rows, excluding option-only view rows.
Reported value
$1,706,473,000SEC Form 13F market value, not total AUM.
Accepted by SEC
23 Oct 2018EDGAR acceptance date.
How to read this filing
- Start with the largest positions and changes, then open issuer-level rows for CUSIP-specific history.
- Form 13F market value excludes cash and many non-13F assets, so it should not be treated as total assets under management.
- SEC classifies this as a holdings report: this manager reports its visible U.S.-listed equity holdings in this filing.
- Manager signature
- Erik Swanson - Chief Executive Officer
- Manager location
- Chicago, IL
- Accepted by SEC
- 23 Oct 2018, 12:04:06 UTC
- SEC form
- 13F-HR
- Prior SEC filing
- Q2 2018 - 30 Jul 2018
- Next SEC filing
- Q4 2018 - 16 Jan 2019
- Source filing
- View source filing
- Options holdings
- Showing equity holdings. Open options holdings.
13F snapshot
Latest parsed holdings, value, and filing-period context.
1 signal
Manager
Names, identifiers, and filing context for this profile.
2 identity fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Related views
1 detail
This view compares filing 2018 Q3 with 2018 Q2. Changes are calculated against the previous SEC filing.
SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held.
* marks a reported price that did not pass the local price check.
* marks a reported price that did not pass the local price check.
Person Signing this Report on Behalf of Reporting Manager:
| Name | Title | City, State | Date |
|---|---|---|---|
| Erik Swanson | Chief Executive Officer | Chicago, Illinois | 23 Oct 2018 |