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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
ProShares Ultra NASDAQ Biotechnology
BIB
$55.5M
| $141K | ﹤0.01% |
2,479
+2,434
| +5,409% | +$138K |
|
1077
Cavco Industries
CVCO
$4.32B
| $140K | ﹤0.01% |
+406
| New | +$140K |
|
1078
Liberty Live Group Series A
LLYVA
$8.95B
| $140K | ﹤0.01% |
+3,838
| New | +$140K |
|
1079
Seanergy Maritime Holdings
SHIP
$181M
| $140K | ﹤0.01% |
17,957
-8,401
| -32% | -$65.5K |
|
1080
Booz Allen Hamilton
BAH
$12.9B
| $139K | ﹤0.01% |
1,093
+572
| +110% | +$72.7K |
|
1081
First Trust Natural Gas ETF
FCG
$329M
| $139K | ﹤0.01% |
+5,760
| New | +$139K |
|
1082
IPG Photonics
IPGP
$3.38B
| $139K | ﹤0.01% |
1,281
+279
| +28% | +$30.3K |
|
1083
Global X S&P 500 Covered Call ETF
XYLD
$3.12B
| $139K | ﹤0.01% |
+3,534
| New | +$139K |
|
|
NPKI
1084
NPK International Inc.
NPKI
$889M
| $139K | ﹤0.01% |
21,067
+21,023
| +47,780% | +$139K |
|
|
TCN
1085
DELISTED
Tricon Residential Inc.
TCN
| $138K | ﹤0.01% |
15,232
+10,175
| +201% | +$92.2K |
|
1086
Mine Safety
MSA
$6.63B
| $137K | ﹤0.01% |
815
-583
| -42% | -$98K |
|
1087
Bankunited
BKU
$2.96B
| $136K | ﹤0.01% |
4,203
-5,124
| -55% | -$166K |
|
1088
Blend Labs
BLND
$1.12B
| $136K | ﹤0.01% |
+53,451
| New | +$136K |
|
1089
Magnachip Semiconductor
MX
$112M
| $136K | ﹤0.01% |
18,158
+16,223
| +838% | +$122K |
|
1090
Alliant Energy
LNT
$16.7B
| $135K | ﹤0.01% |
+2,650
| New | +$135K |
|
1091
Schwab US Dividend Equity ETF
SCHD
$71.5B
| $135K | ﹤0.01% |
5,340
-30,102
| -85% | -$761K |
|
1092
SFL Corp
SFL
$1.06B
| $134K | ﹤0.01% |
11,904
-2,241
| -16% | -$25.2K |
|
1093
Direxion Daily Aerospace & Defense Bull 3X Shares
DFEN
$333M
| $133K | ﹤0.01% |
+5,443
| New | +$133K |
|
1094
Farmer Brothers
FARM
$39.4M
| $133K | ﹤0.01% |
43,640
+41,694
| +2,143% | +$127K |
|
1095
Matrix Service
MTRX
$353M
| $133K | ﹤0.01% |
13,696
+12,508
| +1,053% | +$121K |
|
1096
Owens & Minor
OMI
$412M
| $133K | ﹤0.01% |
6,910
+6,771
| +4,871% | +$130K |
|
1097
Evolution Petroleum
EPM
$179M
| $131K | ﹤0.01% |
22,557
+12,158
| +117% | +$70.6K |
|
1098
Targa Resources
TRGP
$35.8B
| $131K | ﹤0.01% |
1,517
-8,706
| -85% | -$752K |
|
1099
Alignment Healthcare
ALHC
$3.18B
| $130K | ﹤0.01% |
15,112
+14,752
| +4,098% | +$127K |
|
|
ARBK
1100
Argo Blockchain
ARBK
$19.4M
| $130K | ﹤0.01% |
35,008
+20,350
| +139% | +$75.6K |
|