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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
EIGI
1176
DELISTED
Endurance International Group Holdings, Inc.
EIGI
| $34K | ﹤0.01% |
5,126
+3,756
| +274% | +$24.9K |
|
|
SRCI
1177
DELISTED
SRC Energy Inc
SRCI
| $34K | ﹤0.01% |
+7,311
| New | +$34K |
|
|
NTP
1178
DELISTED
Nam Tai Property Inc.
NTP
| $34K | ﹤0.01% |
4,022
+110
| +3% | +$930 |
|
1179
iShares MSCI All Country Asia ex Japan ETF
AAXJ
$2.99B
| $33K | ﹤0.01% |
+520
| New | +$33K |
|
1180
Forte Biosciences
FBRX
$131M
| $33K | ﹤0.01% |
11
+7
| +175% | +$21K |
|
1181
Groupon
GRPN
$923M
| $33K | ﹤0.01% |
530
-2,427
| -82% | -$151K |
|
1182
Liberty Latin America Class C
LILAK
$1.53B
| $33K | ﹤0.01% |
2,428
+2,179
| +875% | +$29.6K |
|
1183
Quantum Corp
QMCO
$98M
| $33K | ﹤0.01% |
834
-420
| -33% | -$16.6K |
|
1184
Steelcase
SCS
$1.93B
| $33K | ﹤0.01% |
2,255
+2,130
| +1,704% | +$31.2K |
|
|
SRC
1185
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $33K | ﹤0.01% |
964
+250
| +35% | +$8.56K |
|
|
UPL
1186
DELISTED
Ultra Petroleum Corp. Common Stock
UPL
| $33K | ﹤0.01% |
43,455
-5,635
| -11% | -$4.28K |
|
1187
Adtran
ADTN
$809M
| $32K | ﹤0.01% |
+3,056
| New | +$32K |
|
1188
Atkore
ATKR
$2.06B
| $32K | ﹤0.01% |
1,627
-3,049
| -65% | -$60K |
|
1189
General Motors
GM
$55.7B
| $32K | ﹤0.01% |
979
-63,589
| -98% | -$2.08M |
|
1190
Ormat Technologies
ORA
$5.53B
| $32K | ﹤0.01% |
612
-1,109
| -64% | -$58K |
|
1191
ProAssurance
PRA
$1.22B
| $32K | ﹤0.01% |
797
-887
| -53% | -$35.6K |
|
1192
Tredegar Corp
TG
$279M
| $32K | ﹤0.01% |
2,059
-3,161
| -61% | -$49.1K |
|
|
OAK
1193
DELISTED
OAKTREE CAPITAL GROUP, LLC
OAK
| $32K | ﹤0.01% |
808
-868
| -52% | -$34.4K |
|
1194
Alibaba
BABA
$370B
| $31K | ﹤0.01% |
+228
| New | +$31K |
|
1195
Barings BDC
BBDC
$978M
| $31K | ﹤0.01% |
3,546
-4,548
| -56% | -$39.8K |
|
1196
iShares MSCI Malaysia ETF
EWM
$245M
| $31K | ﹤0.01% |
1,059
-1,754
| -62% | -$51.3K |
|
1197
iShares US Technology ETF
IYW
$24B
| $31K | ﹤0.01% |
800
-9,224
| -92% | -$357K |
|
1198
ODP
ODP
$624M
| $31K | ﹤0.01% |
+1,235
| New | +$31K |
|
1199
Vishay Intertechnology
VSH
$2.07B
| $31K | ﹤0.01% |
1,726
-16,007
| -90% | -$287K |
|
1200
Bloom Energy
BE
$15.7B
| $30K | ﹤0.01% |
3,049
+1,432
| +89% | +$14.1K |
|