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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
Xcel Energy
XEL
$43.1B
| $159K | ﹤0.01% |
2,310
-3,198
| -58% | -$220K |
|
|
SYKE
927
DELISTED
SYKES Enterprises Inc
SYKE
| $159K | ﹤0.01% |
4,658
+4,379
| +1,570% | +$149K |
|
928
KraneShares Bosera MSCI China A 50 Connect Index ETF
KBA
$241M
| $158K | ﹤0.01% |
4,009
+3,027
| +308% | +$119K |
|
|
MANT
929
DELISTED
Mantech International Corp
MANT
| $158K | ﹤0.01% |
2,295
-690
| -23% | -$47.5K |
|
930
Carnival PLC
CUK
$38.7B
| $157K | ﹤0.01% |
12,176
+11,383
| +1,435% | +$147K |
|
|
SYNH
931
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $157K | ﹤0.01% |
+2,961
| New | +$157K |
|
932
Essex Property Trust
ESS
$17.3B
| $156K | ﹤0.01% |
+777
| New | +$156K |
|
933
Marcus Corp
MCS
$503M
| $156K | ﹤0.01% |
20,229
+2,409
| +14% | +$18.6K |
|
|
ENDP
934
DELISTED
Endo International plc
ENDP
| $156K | ﹤0.01% |
47,438
+35,317
| +291% | +$116K |
|
|
EGOV
935
DELISTED
NIC Inc
EGOV
| $156K | ﹤0.01% |
7,924
+4,088
| +107% | +$80.5K |
|
|
YELL
936
DELISTED
Yellow Corporation Common Stock
YELL
| $156K | ﹤0.01% |
39,901
-40,276
| -50% | -$157K |
|
937
AdvanSix
ASIX
$586M
| $155K | ﹤0.01% |
12,052
+11,433
| +1,847% | +$147K |
|
938
First Bancorp
FBP
$3.54B
| $155K | ﹤0.01% |
+29,761
| New | +$155K |
|
939
US Global Investors
GROW
$31.9M
| $155K | ﹤0.01% |
65,312
+34,933
| +115% | +$82.9K |
|
940
Quaker Houghton
KWR
$2.47B
| $155K | ﹤0.01% |
+866
| New | +$155K |
|
941
VanEck Agribusiness ETF
MOO
$630M
| $155K | ﹤0.01% |
+2,300
| New | +$155K |
|
|
EMWP
942
DELISTED
Eros Media World PLC
EMWP
| $155K | ﹤0.01% |
3,525
+2,156
| +157% | +$94.8K |
|
943
Brookfield
BN
$103B
| $154K | ﹤0.01% |
5,830
-6,391
| -52% | -$169K |
|
|
STL
944
DELISTED
Sterling Bancorp
STL
| $154K | ﹤0.01% |
+14,650
| New | +$154K |
|
|
SLCA
945
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $153K | ﹤0.01% |
51,003
+6,309
| +14% | +$18.9K |
|
|
ZIXI
946
DELISTED
Zix Corporation
ZIXI
| $152K | ﹤0.01% |
26,144
+24,057
| +1,153% | +$140K |
|
|
ACB
947
Aurora Cannabis
ACB
$277M
| $151K | ﹤0.01% |
3,250
+3,229
| +15,376% | +$150K |
|
948
Evercore
EVR
$13.3B
| $151K | ﹤0.01% |
2,319
-213
| -8% | -$13.9K |
|
949
Karyopharm Therapeutics
KPTI
$57.6M
| $151K | ﹤0.01% |
693
-620
| -47% | -$135K |
|
950
AvalonBay Communities
AVB
$28B
| $150K | ﹤0.01% |
+1,010
| New | +$150K |
|