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 | |
|---|---|---|---|---|---|---|
751
TETRA Technologies
TTI
$706M
| $374K | ﹤0.01% |
+84,566
| New | +$374K |
|
|
SIX
752
DELISTED
Six Flags Entertainment Corp.
SIX
| $374K | ﹤0.01% |
14,218
-18,511
| -57% | -$487K |
|
753
Fortuna Silver Mines
FSM
$2.5B
| $372K | ﹤0.01% |
99,811
-109,386
| -52% | -$408K |
|
754
Qiagen
QGEN
$9.96B
| $371K | ﹤0.01% |
8,397
+25
| +0.3% | +$1.11K |
|
755
SPS Commerce
SPSC
$4.06B
| $371K | ﹤0.01% |
+2,010
| New | +$371K |
|
756
Ionis Pharmaceuticals
IONS
$9.72B
| $369K | ﹤0.01% |
8,530
-1,015
| -11% | -$43.9K |
|
|
DSKE
757
DELISTED
Daseke, Inc. Common Stock
DSKE
| $369K | ﹤0.01% |
+44,480
| New | +$369K |
|
758
Incyte
INCY
$16.9B
| $366K | ﹤0.01% |
+6,430
| New | +$366K |
|
759
eXp World Holdings
EXPI
$1.74B
| $363K | ﹤0.01% |
+35,175
| New | +$363K |
|
760
Genius Sports
GENI
$3.05B
| $363K | ﹤0.01% |
63,612
+2,524
| +4% | +$14.4K |
|
761
California Resources
CRC
$4.6B
| $362K | ﹤0.01% |
+6,575
| New | +$362K |
|
762
REX American Resources
REX
$1.01B
| $361K | ﹤0.01% |
6,149
-2,664
| -30% | -$156K |
|
763
Recursion Pharmaceuticals
RXRX
$2.14B
| $361K | ﹤0.01% |
+36,216
| New | +$361K |
|
|
MTTR
764
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $359K | ﹤0.01% |
159,289
+5,956
| +4% | +$13.4K |
|
765
NetEase
NTES
$96.3B
| $358K | ﹤0.01% |
3,469
-50,884
| -94% | -$5.25M |
|
766
IAC Inc
IAC
$2.9B
| $357K | ﹤0.01% |
8,179
+860
| +12% | +$37.5K |
|
767
Modine Manufacturing
MOD
$8.13B
| $354K | ﹤0.01% |
+3,722
| New | +$354K |
|
768
iShares US Technology ETF
IYW
$24.6B
| $350K | ﹤0.01% |
2,593
+348
| +16% | +$47K |
|
769
McEwen Inc
MUX
$786M
| $349K | ﹤0.01% |
35,466
-110,137
| -76% | -$1.08M |
|
770
US Foods
USFD
$17.6B
| $349K | ﹤0.01% |
6,473
+327
| +5% | +$17.6K |
|
771
Aemetis
AMTX
$154M
| $347K | ﹤0.01% |
+58,060
| New | +$347K |
|
772
ProShares UltraPro Short S&P 500
SPXU
$567M
| $347K | ﹤0.01% |
10,769
-787
| -7% | -$25.4K |
|
773
Biomea Fusion
BMEA
$116M
| $344K | ﹤0.01% |
+23,027
| New | +$344K |
|
774
iShares S&P 100 ETF
OEF
$22.9B
| $344K | ﹤0.01% |
1,392
+450
| +48% | +$111K |
|
775
Leonardo DRS
DRS
$11B
| $339K | ﹤0.01% |
+15,372
| New | +$339K |
|