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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Elastic
ESTC
$9.56B
| $496K | ﹤0.01% |
6,921
-552
| -7% | -$39.6K |
|
577
United States Copper Index Fund
CPER
$220M
| $492K | ﹤0.01% |
+24,105
| New | +$492K |
|
578
PepsiCo
PEP
$195B
| $492K | ﹤0.01% |
+3,018
| New | +$492K |
|
579
The GEO Group
GEO
$3.01B
| $491K | ﹤0.01% |
+63,789
| New | +$491K |
|
580
Direxion Daily MSCI Brazil Bull 2X Shares
BRZU
$134M
| $490K | ﹤0.01% |
6,752
-8,502
| -56% | -$617K |
|
581
Viant Technology
DSP
$159M
| $488K | ﹤0.01% |
116,114
+11,199
| +11% | +$47.1K |
|
582
Monster Beverage
MNST
$61.3B
| $488K | ﹤0.01% |
+11,238
| New | +$488K |
|
|
SOL
583
Emeren Group
SOL
$96.5M
| $488K | ﹤0.01% |
97,011
+72,795
| +301% | +$366K |
|
584
Theravance Biopharma
TBPH
$687M
| $487K | ﹤0.01% |
48,092
+44,677
| +1,308% | +$452K |
|
585
JFrog
FROG
$5.8B
| $482K | ﹤0.01% |
21,809
-7,087
| -25% | -$157K |
|
586
Oxford Industries
OXM
$604M
| $482K | ﹤0.01% |
+5,378
| New | +$482K |
|
587
ProShares UltraPro Short Russell2000
SRTY
$82M
| $482K | ﹤0.01% |
6,790
-3,101
| -31% | -$220K |
|
588
10x Genomics
TXG
$1.57B
| $481K | ﹤0.01% |
16,905
+12,702
| +302% | +$361K |
|
589
Matsons
MATX
$3.28B
| $478K | ﹤0.01% |
+7,784
| New | +$478K |
|
590
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$495M
| $475K | ﹤0.01% |
+18,001
| New | +$475K |
|
591
iShares Core S&P Total US Stock Market ETF
ITOT
$76.1B
| $473K | ﹤0.01% |
5,949
+3,360
| +130% | +$267K |
|
|
ETRN
592
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $472K | ﹤0.01% |
63,165
-36,547
| -37% | -$273K |
|
593
Galicia Financial Group
GGAL
$5.15B
| $470K | ﹤0.01% |
+63,135
| New | +$470K |
|
594
Owens Corning
OC
$12.8B
| $470K | ﹤0.01% |
+5,989
| New | +$470K |
|
595
Direxion Daily Financial Bull 3x Shares
FAS
$2.58B
| $467K | ﹤0.01% |
+8,619
| New | +$467K |
|
596
Brighthouse Financial
BHF
$2.79B
| $466K | ﹤0.01% |
10,747
+2,829
| +36% | +$123K |
|
597
Krispy Kreme
DNUT
$514M
| $466K | ﹤0.01% |
40,431
+28,201
| +231% | +$325K |
|
598
Five Below
FIVE
$8.05B
| $466K | ﹤0.01% |
3,386
+2,797
| +475% | +$385K |
|
599
Bloom Energy
BE
$14.7B
| $465K | ﹤0.01% |
23,292
-33,600
| -59% | -$671K |
|
600
iShares MSCI Spain ETF
EWP
$1.38B
| $465K | ﹤0.01% |
+23,504
| New | +$465K |
|