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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1526
Moelis & Co
MC
$5.77B
| $34K | ﹤0.01% |
+609
| New | +$34K |
|
1527
MiMedx Group
MDXG
$1.06B
| $34K | ﹤0.01% |
+4,436
| New | +$34K |
|
1528
Monroe Capital Corp
MRCC
$165M
| $34K | ﹤0.01% |
+4,747
| New | +$34K |
|
1529
Compañía de Minas Buenaventura
BVN
$5.08B
| $33K | ﹤0.01% |
2,134
-1,538
| -42% | -$23.8K |
|
1530
Mercury Insurance
MCY
$4.39B
| $33K | ﹤0.01% |
656
-350
| -35% | -$17.6K |
|
1531
Prime Medicine
PRME
$913M
| $33K | ﹤0.01% |
+4,837
| New | +$33K |
|
|
SEVN
1532
Seven Hills Realty Trust
SEVN
$165M
| $33K | ﹤0.01% |
+2,628
| New | +$33K |
|
|
SUPV
1533
Grupo Supervielle
SUPV
$451M
| $33K | ﹤0.01% |
5,796
-21,952
| -79% | -$125K |
|
1534
Weatherford International
WFRD
$4.71B
| $33K | ﹤0.01% |
+291
| New | +$33K |
|
1535
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.72B
| $33K | ﹤0.01% |
425
-388
| -48% | -$30.1K |
|
1536
Zymeworks
ZYME
$1.25B
| $33K | ﹤0.01% |
+3,146
| New | +$33K |
|
1537
Allbirds
BIRD
$48.9M
| $32K | ﹤0.01% |
2,312
+1,622
| +235% | +$22.5K |
|
1538
CI&T Inc
CINT
$762M
| $32K | ﹤0.01% |
7,787
+4,145
| +114% | +$17K |
|
1539
Clover Health Investments
CLOV
$1.57B
| $32K | ﹤0.01% |
+40,341
| New | +$32K |
|
1540
GSI Technology
GSIT
$107M
| $32K | ﹤0.01% |
9,503
+2,397
| +34% | +$8.07K |
|
1541
Gray Television
GTN
$562M
| $32K | ﹤0.01% |
5,214
-24,151
| -82% | -$148K |
|
1542
iShares Core Total USD Bond Market ETF
IUSB
$34.4B
| $32K | ﹤0.01% |
712
+52
| +8% | +$2.34K |
|
1543
Kite Realty
KRG
$4.89B
| $32K | ﹤0.01% |
1,511
-3,184
| -68% | -$67.4K |
|
1544
ONE Gas
OGS
$4.53B
| $32K | ﹤0.01% |
505
+443
| +715% | +$28.1K |
|
1545
POET Technologies
POET
$475M
| $32K | ﹤0.01% |
+23,827
| New | +$32K |
|
1546
Eventbrite
EB
$295M
| $31K | ﹤0.01% |
5,733
+1,307
| +30% | +$7.07K |
|
1547
iShares MSCI Spain ETF
EWP
$1.39B
| $31K | ﹤0.01% |
968
+859
| +788% | +$27.5K |
|
|
JBGS
1548
JBG SMITH
JBGS
$1.48B
| $31K | ﹤0.01% |
+1,951
| New | +$31K |
|
1549
PLAYSTUDIOS Inc
MYPS
$124M
| $31K | ﹤0.01% |
11,206
+9,858
| +731% | +$27.3K |
|
1550
Perma-Fix Environmental Services
PESI
$177M
| $31K | ﹤0.01% |
+2,666
| New | +$31K |
|