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 |
NVIDIA
NVDA
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LAND
1051
Gladstone Land Corp
LAND
$322M
| $143K | ﹤0.01% |
14,119
-2,353
| -14% | -$23.8K |
|
1052
Performance Food Group
PFGC
$16.6B
| $143K | ﹤0.01% |
1,636
-1,899
| -54% | -$166K |
|
1053
Packaging Corp of America
PKG
$19.5B
| $143K | ﹤0.01% |
764
-1,605
| -68% | -$300K |
|
1054
United States Antimony
UAMY
$571M
| $143K | ﹤0.01% |
+65,894
| New | +$143K |
|
1055
Zynex
ZYXI
$46.7M
| $143K | ﹤0.01% |
55,707
+35,322
| +173% | +$90.7K |
|
1056
Global X Robotics & Artificial Intelligence ETF
BOTZ
$2.9B
| $142K | ﹤0.01% |
+4,359
| New | +$142K |
|
1057
Willis Towers Watson
WTW
$33.2B
| $142K | ﹤0.01% |
+464
| New | +$142K |
|
1058
Cognyte Software
CGNT
$636M
| $141K | ﹤0.01% |
15,335
+8,441
| +122% | +$77.6K |
|
1059
SPDR Bloomberg High Yield Bond ETF
JNK
$8.12B
| $141K | ﹤0.01% |
1,450
+1,262
| +671% | +$123K |
|
1060
Repay Holdings
RPAY
$509M
| $141K | ﹤0.01% |
+29,342
| New | +$141K |
|
1061
Talkspace
TALK
$435M
| $141K | ﹤0.01% |
51,069
-76,628
| -60% | -$212K |
|
|
ZH
1062
Zhihu
ZH
$455M
| $141K | ﹤0.01% |
35,582
-59,512
| -63% | -$236K |
|
1063
Vuzix
VUZI
$183M
| $140K | ﹤0.01% |
+48,279
| New | +$140K |
|
1064
CarMax
KMX
$9.19B
| $139K | ﹤0.01% |
+2,083
| New | +$139K |
|
|
LOMA
1065
Loma Negra
LOMA
$922M
| $138K | ﹤0.01% |
12,627
-7,098
| -36% | -$77.6K |
|
1066
STMicroelectronics
STM
$23.3B
| $137K | ﹤0.01% |
4,516
-38,840
| -90% | -$1.18M |
|
1067
Innoviz Technologies
INVZ
$371M
| $136K | ﹤0.01% |
83,150
-47,731
| -36% | -$78.1K |
|
1068
Leggett & Platt
LEG
$1.34B
| $136K | ﹤0.01% |
15,317
+2,427
| +19% | +$21.5K |
|
1069
Taboola.com
TBLA
$1.01B
| $136K | ﹤0.01% |
37,288
+20,697
| +125% | +$75.5K |
|
1070
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$15.7B
| $136K | ﹤0.01% |
+2,724
| New | +$136K |
|
1071
Olo Inc
OLO
$1.74B
| $135K | ﹤0.01% |
15,199
+11,680
| +332% | +$104K |
|
1072
TTM Technologies
TTMI
$4.99B
| $135K | ﹤0.01% |
+3,327
| New | +$135K |
|
1073
Clear Channel Outdoor Holdings
CCO
$661M
| $134K | ﹤0.01% |
115,011
+114,898
| +101,680% | +$134K |
|
1074
Denny's
DENN
$270M
| $134K | ﹤0.01% |
32,921
-11,085
| -25% | -$45.1K |
|
1075
Fiverr
FVRR
$878M
| $134K | ﹤0.01% |
4,585
+1,159
| +34% | +$33.9K |
|