Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
Mercer International
MERC
$192M
| $339K | ﹤0.01% |
34,162
-17,164
| -33% | -$170K |
|
777
Trex
TREX
$5.7B
| $338K | ﹤0.01% |
3,390
-8,768
| -72% | -$874K |
|
778
Eversource Energy
ES
$24.9B
| $336K | ﹤0.01% |
5,631
+803
| +17% | +$47.9K |
|
|
BLUE
779
DELISTED
bluebird bio
BLUE
| $333K | ﹤0.01% |
13,027
+364
| +3% | +$9.31K |
|
780
Pultegroup
PHM
$26B
| $332K | ﹤0.01% |
+2,759
| New | +$332K |
|
781
American Water Works
AWK
$26.4B
| $330K | ﹤0.01% |
+2,708
| New | +$330K |
|
782
Curtiss-Wright
CW
$19.4B
| $330K | ﹤0.01% |
+1,293
| New | +$330K |
|
783
BHP
BHP
$132B
| $328K | ﹤0.01% |
5,701
-106,799
| -95% | -$6.14M |
|
784
Opko Health
OPK
$1.15B
| $328K | ﹤0.01% |
273,551
+125,191
| +84% | +$150K |
|
|
CIM
785
Chimera Investment
CIM
$1.13B
| $326K | ﹤0.01% |
+23,637
| New | +$326K |
|
786
Calumet Specialty Products
CLMT
$1.61B
| $326K | ﹤0.01% |
+21,990
| New | +$326K |
|
787
Atlas Lithium Corp
ATLX
$92.4M
| $325K | ﹤0.01% |
19,122
+17,204
| +897% | +$292K |
|
788
Elanco Animal Health
ELAN
$9.54B
| $325K | ﹤0.01% |
20,004
-63,570
| -76% | -$1.03M |
|
789
TORM
TRMD
$2.21B
| $325K | ﹤0.01% |
9,324
-7,316
| -44% | -$255K |
|
|
AIV
790
Aimco
AIV
$1.12B
| $324K | ﹤0.01% |
39,567
-9,058
| -19% | -$74.2K |
|
791
Freedom Holding
FRHC
$10.4B
| $324K | ﹤0.01% |
4,603
-11,956
| -72% | -$842K |
|
792
Jefferies Financial Group
JEF
$14.3B
| $323K | ﹤0.01% |
7,344
-27,291
| -79% | -$1.2M |
|
793
Granite Construction
GVA
$4.82B
| $319K | ﹤0.01% |
5,599
-602
| -10% | -$34.3K |
|
|
AUGX
794
DELISTED
Augmedix, Inc. Common Stock
AUGX
| $319K | ﹤0.01% |
+78,071
| New | +$319K |
|
795
Denison Mines
DNN
$2.39B
| $318K | ﹤0.01% |
163,353
+78,641
| +93% | +$153K |
|
796
Cushman & Wakefield
CWK
$3.85B
| $317K | ﹤0.01% |
30,325
+28,710
| +1,778% | +$300K |
|
797
Fidelity MSCI Energy Index ETF
FENY
$1.41B
| $316K | ﹤0.01% |
12,233
+12,081
| +7,948% | +$312K |
|
798
OneMain Financial
OMF
$7.23B
| $316K | ﹤0.01% |
+6,204
| New | +$316K |
|
799
Warby Parker
WRBY
$3.47B
| $314K | ﹤0.01% |
23,119
-36,664
| -61% | -$498K |
|
800
Eldorado Gold
EGO
$5.67B
| $313K | ﹤0.01% |
+22,306
| New | +$313K |
|