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 | |
|---|---|---|---|---|---|---|
801
Atomera
ATOM
$117M
| $312K | ﹤0.01% |
50,679
+40,321
| +389% | +$248K |
|
802
Danaher
DHR
$138B
| $312K | ﹤0.01% |
1,253
-22,859
| -95% | -$5.69M |
|
|
GPMT
803
Granite Point Mortgage Trust
GPMT
$143M
| $312K | ﹤0.01% |
+65,504
| New | +$312K |
|
804
B2Gold
BTG
$5.94B
| $311K | ﹤0.01% |
119,194
+12,069
| +11% | +$31.5K |
|
805
RCI Hospitality Holdings
RICK
$238M
| $310K | ﹤0.01% |
5,345
-4,471
| -46% | -$259K |
|
806
Revolution Medicines
RVMD
$8.14B
| $310K | ﹤0.01% |
9,649
+1,147
| +13% | +$36.9K |
|
807
iShares Global Clean Energy ETF
ICLN
$1.64B
| $309K | ﹤0.01% |
+22,132
| New | +$309K |
|
808
Energy Fuels
UUUU
$3.43B
| $309K | ﹤0.01% |
49,189
+25,437
| +107% | +$160K |
|
809
SPDR Portfolio S&P 1500 Composite Stock Market ETF
SPTM
$11.5B
| $308K | ﹤0.01% |
4,807
-11,217
| -70% | -$719K |
|
810
Worthington Enterprises
WOR
$3.04B
| $308K | ﹤0.01% |
+4,958
| New | +$308K |
|
811
Freshworks
FRSH
$3.76B
| $307K | ﹤0.01% |
+16,912
| New | +$307K |
|
812
Ocular Therapeutix
OCUL
$2.11B
| $307K | ﹤0.01% |
33,841
-25,274
| -43% | -$229K |
|
813
Consolidated Edison
ED
$34.7B
| $306K | ﹤0.01% |
+3,373
| New | +$306K |
|
814
VanEck JP Morgan EM Local Currency Bond ETF
EMLC
$3.8B
| $306K | ﹤0.01% |
+12,495
| New | +$306K |
|
815
Aldeyra Therapeutics
ALDX
$296M
| $305K | ﹤0.01% |
93,465
+71,887
| +333% | +$235K |
|
816
Ocugen
OCGN
$418M
| $305K | ﹤0.01% |
186,557
+125,951
| +208% | +$206K |
|
|
WW
817
DELISTED
WW International
WW
| $305K | ﹤0.01% |
+165,055
| New | +$305K |
|
818
Mitek Systems
MITK
$465M
| $302K | ﹤0.01% |
+21,454
| New | +$302K |
|
|
PENG
819
Penguin Solutions Inc
PENG
$1.44B
| $302K | ﹤0.01% |
+11,493
| New | +$302K |
|
820
ProFrac Holding
ACDC
$649M
| $298K | ﹤0.01% |
+35,670
| New | +$298K |
|
821
Antero Midstream
AM
$8.88B
| $298K | ﹤0.01% |
21,255
+1,022
| +5% | +$14.3K |
|
|
ACB
822
Aurora Cannabis
ACB
$286M
| $297K | ﹤0.01% |
67,801
+63,373
| +1,431% | +$278K |
|
823
SPDR Portfolio Mortgage Backed Bond ETF
SPMB
$6.38B
| $297K | ﹤0.01% |
+13,720
| New | +$297K |
|
824
TeraWulf
WULF
$4.48B
| $297K | ﹤0.01% |
113,118
-224,775
| -67% | -$590K |
|
825
FIGS
FIGS
$1.19B
| $296K | ﹤0.01% |
59,526
+54,944
| +1,199% | +$273K |
|