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 | |
|---|---|---|---|---|---|---|
1101
Global X Copper Miners ETF NEW
COPX
$2.24B
| $130K | ﹤0.01% |
3,475
+2,297
| +195% | +$85.9K |
|
1102
H&R Block
HRB
$6.86B
| $128K | ﹤0.01% |
2,666
-19,845
| -88% | -$953K |
|
1103
iShares Global Tech ETF
IXN
$5.93B
| $128K | ﹤0.01% |
1,885
+1,219
| +183% | +$82.8K |
|
|
NFGC
1104
New Found Gold
NFGC
$508M
| $127K | ﹤0.01% |
36,299
+19,529
| +116% | +$68.3K |
|
1105
SoundHound AI
SOUN
$5.76B
| $127K | ﹤0.01% |
59,979
-42,517
| -41% | -$90K |
|
1106
Kornit Digital
KRNT
$647M
| $126K | ﹤0.01% |
6,613
-32,285
| -83% | -$615K |
|
|
WRK
1107
DELISTED
WestRock Company
WRK
| $126K | ﹤0.01% |
3,045
-34,047
| -92% | -$1.41M |
|
1108
Gildan
GIL
$8.03B
| $125K | ﹤0.01% |
3,811
+2,756
| +261% | +$90.4K |
|
1109
Comtech Telecommunications
CMTL
$69.1M
| $124K | ﹤0.01% |
14,757
+14,315
| +3,239% | +$120K |
|
1110
Gaotu Techedu
GOTU
$901M
| $124K | ﹤0.01% |
34,318
+29,901
| +677% | +$108K |
|
1111
PDS Biotechnology
PDSB
$54.5M
| $124K | ﹤0.01% |
25,083
-16,456
| -40% | -$81.4K |
|
1112
iShares MSCI Emerging Markets ex China ETF
EMXC
$13.1B
| $123K | ﹤0.01% |
2,221
+2,174
| +4,626% | +$120K |
|
1113
Hayward Holdings
HAYW
$3.38B
| $123K | ﹤0.01% |
+9,050
| New | +$123K |
|
1114
Liberty Broadband Class C
LBRDK
$8.69B
| $123K | ﹤0.01% |
+1,528
| New | +$123K |
|
1115
POSCO
PKX
$15.3B
| $123K | ﹤0.01% |
+1,302
| New | +$123K |
|
1116
Vicor
VICR
$2.28B
| $123K | ﹤0.01% |
2,738
-5,647
| -67% | -$254K |
|
1117
Codexis
CDXS
$219M
| $122K | ﹤0.01% |
40,114
+38,016
| +1,812% | +$116K |
|
1118
SkyWater Technology
SKYT
$509M
| $122K | ﹤0.01% |
+12,748
| New | +$122K |
|
1119
American Resources Corp
AREC
$172M
| $121K | ﹤0.01% |
81,300
-57,090
| -41% | -$85K |
|
1120
Omnicell
OMCL
$1.46B
| $121K | ﹤0.01% |
+3,241
| New | +$121K |
|
1121
Semtech
SMTC
$5.23B
| $121K | ﹤0.01% |
+5,536
| New | +$121K |
|
1122
Westrock Coffee
WEST
$508M
| $121K | ﹤0.01% |
11,907
-18,955
| -61% | -$193K |
|
1123
Astria Therapeutics
ATXS
$419M
| $120K | ﹤0.01% |
15,680
+14,615
| +1,372% | +$112K |
|
1124
Barrett Business Services
BBSI
$1.2B
| $120K | ﹤0.01% |
+4,156
| New | +$120K |
|
|
DRD
1125
DRDGold
DRD
$1.93B
| $120K | ﹤0.01% |
15,144
+6,953
| +85% | +$55.1K |
|