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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
726
ProShares UltraShort MSCI Brazil Capped
BZQ
$5.35M
| $274K | ﹤0.01% |
4,010
+128
| +3% | +$8.75K |
|
|
CHU
727
DELISTED
China Unicom (HONG KONG) Limited
CHU
| $273K | ﹤0.01% |
41,804
-5,797
| -12% | -$37.9K |
|
728
BCE
BCE
$22.6B
| $272K | ﹤0.01% |
6,559
-22,239
| -77% | -$922K |
|
729
Omnicom Group
OMC
$14.9B
| $272K | ﹤0.01% |
+5,512
| New | +$272K |
|
730
New Mountain Finance
NMFC
$1.12B
| $271K | ﹤0.01% |
28,425
+24,509
| +626% | +$234K |
|
|
GOGL
731
DELISTED
Golden Ocean Group
GOGL
| $270K | ﹤0.01% |
70,733
+49,882
| +239% | +$190K |
|
732
Grand Canyon Education
LOPE
$5.82B
| $270K | ﹤0.01% |
+3,381
| New | +$270K |
|
733
DXC Technology
DXC
$2.55B
| $269K | ﹤0.01% |
15,088
-37,585
| -71% | -$670K |
|
|
MXIM
734
DELISTED
Maxim Integrated Products
MXIM
| $268K | ﹤0.01% |
+3,971
| New | +$268K |
|
735
APA Corp
APA
$8.18B
| $267K | ﹤0.01% |
28,281
+20,564
| +266% | +$194K |
|
736
Jack in the Box
JACK
$339M
| $267K | ﹤0.01% |
3,374
-1,888
| -36% | -$149K |
|
737
Southern Copper
SCCO
$85.2B
| $267K | ﹤0.01% |
+6,197
| New | +$267K |
|
|
PACW
738
DELISTED
PacWest Bancorp
PACW
| $267K | ﹤0.01% |
15,646
+15,429
| +7,110% | +$263K |
|
739
Tenet Healthcare
THC
$17.1B
| $266K | ﹤0.01% |
+10,866
| New | +$266K |
|
|
UN
740
DELISTED
Unilever NV New York Registry Shares
UN
| $266K | ﹤0.01% |
+4,405
| New | +$266K |
|
741
Kilroy Realty
KRC
$5.08B
| $265K | ﹤0.01% |
5,107
+3,844
| +304% | +$199K |
|
|
SA
742
Seabridge Gold
SA
$1.85B
| $265K | ﹤0.01% |
14,147
-12,800
| -48% | -$240K |
|
743
Main Street Capital
MAIN
$5.99B
| $264K | ﹤0.01% |
8,943
+2,712
| +44% | +$80.1K |
|
|
DRD
744
DRDGold
DRD
$1.96B
| $263K | ﹤0.01% |
22,275
+21,222
| +2,015% | +$251K |
|
745
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$95.9M
| $263K | ﹤0.01% |
+4,571
| New | +$263K |
|
746
First American
FAF
$6.95B
| $263K | ﹤0.01% |
5,170
-2,884
| -36% | -$147K |
|
747
Opko Health
OPK
$1.14B
| $262K | ﹤0.01% |
71,125
+70,855
| +26,243% | +$261K |
|
|
AAWW
748
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $261K | ﹤0.01% |
+4,295
| New | +$261K |
|
749
CRH
CRH
$76.3B
| $260K | ﹤0.01% |
7,210
-8,608
| -54% | -$310K |
|
750
iRhythm Technologies
IRTC
$5.87B
| $260K | ﹤0.01% |
+1,096
| New | +$260K |
|