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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
601
Chart Industries
GTLS
$8.95B
| $539K | ﹤0.01% |
+4,349
| New | +$539K |
|
602
Teucrium Wheat Fund
WEAT
$116M
| $539K | ﹤0.01% |
102,988
+544
| +0.5% | +$2.85K |
|
603
Owens Corning
OC
$12.8B
| $536K | ﹤0.01% |
3,041
+1,644
| +118% | +$290K |
|
604
ProShares UltraPro Dow 30
UDOW
$714M
| $535K | ﹤0.01% |
+5,573
| New | +$535K |
|
|
MSTX
605
Tidal Trust II Defiance Daily Target 2x Long MSTR ETF
MSTX
$735M
| $535K | ﹤0.01% |
+18,449
| New | +$535K |
|
606
Invesco CurrencyShares Euro Currency Trust
FXE
$529M
| $534K | ﹤0.01% |
+5,198
| New | +$534K |
|
607
Bausch + Lomb
BLCO
$5.31B
| $532K | ﹤0.01% |
27,604
-2,989
| -10% | -$57.6K |
|
608
NOV
NOV
$4.85B
| $531K | ﹤0.01% |
33,255
+21,954
| +194% | +$351K |
|
609
ProShares Short Bitcoin Strategy ETF
BITI
$74.7M
| $527K | ﹤0.01% |
14,149
-3,002
| -18% | -$112K |
|
610
Mid-America Apartment Communities
MAA
$16.6B
| $524K | ﹤0.01% |
3,300
+2,184
| +196% | +$347K |
|
611
Kosmos Energy
KOS
$832M
| $523K | ﹤0.01% |
+129,854
| New | +$523K |
|
612
Ryan Specialty Holdings
RYAN
$6.53B
| $522K | ﹤0.01% |
7,868
+7,175
| +1,035% | +$476K |
|
|
KREF
613
KKR Real Estate Finance Trust
KREF
$644M
| $521K | ﹤0.01% |
+42,264
| New | +$521K |
|
614
ProShares UltraShort QQQ
QID
$280M
| $517K | ﹤0.01% |
14,300
+5,482
| +62% | +$198K |
|
|
SGI
615
Somnigroup International Inc.
SGI
$17.9B
| $516K | ﹤0.01% |
9,463
-68,877
| -88% | -$3.76M |
|
616
dLocal
DLO
$4.02B
| $514K | ﹤0.01% |
64,303
-6,630
| -9% | -$53K |
|
617
Honeywell
HON
$134B
| $514K | ﹤0.01% |
2,490
-2,111
| -46% | -$436K |
|
618
Tronox
TROX
$755M
| $514K | ﹤0.01% |
+35,174
| New | +$514K |
|
619
iShares MSCI Australia ETF
EWA
$1.54B
| $513K | ﹤0.01% |
+18,930
| New | +$513K |
|
620
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$249M
| $512K | ﹤0.01% |
10,325
-9,123
| -47% | -$452K |
|
621
Sportradar
SRAD
$9.25B
| $510K | ﹤0.01% |
42,132
+17,217
| +69% | +$208K |
|
622
Gaotu Techedu
GOTU
$865M
| $509K | ﹤0.01% |
129,849
+82,154
| +172% | +$322K |
|
623
Ameren
AEE
$26.8B
| $507K | ﹤0.01% |
5,806
-1,699
| -23% | -$148K |
|
|
CIO
624
City Office REIT
CIO
$280M
| $506K | ﹤0.01% |
86,706
+2,210
| +3% | +$12.9K |
|
625
ICU Medical
ICUI
$3.3B
| $502K | ﹤0.01% |
2,758
+2,289
| +488% | +$417K |
|