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 | |
|---|---|---|---|---|---|---|
1001
Sportradar
SRAD
$8.93B
| $143K | ﹤0.01% |
16,324
+12,257
| +301% | +$107K |
|
|
ALEX
1002
Alexander & Baldwin
ALEX
$1.34B
| $142K | ﹤0.01% |
8,614
+6,557
| +319% | +$108K |
|
1003
Extreme Networks
EXTR
$2.95B
| $142K | ﹤0.01% |
+10,877
| New | +$142K |
|
1004
MGM Resorts International
MGM
$9.36B
| $142K | ﹤0.01% |
4,778
-35,637
| -88% | -$1.06M |
|
1005
Century Communities
CCS
$2.01B
| $141K | ﹤0.01% |
+3,319
| New | +$141K |
|
1006
CleanSpark
CLSK
$2.89B
| $141K | ﹤0.01% |
44,529
+17,750
| +66% | +$56.2K |
|
1007
Vanguard Mid-Cap Growth ETF
VOT
$17.8B
| $141K | ﹤0.01% |
832
+200
| +32% | +$33.9K |
|
1008
Noble Corp
NE
$4.8B
| $140K | ﹤0.01% |
4,766
+371
| +8% | +$10.9K |
|
1009
Annaly Capital Management
NLY
$14.1B
| $140K | ﹤0.01% |
8,172
-20,775
| -72% | -$356K |
|
1010
Intel
INTC
$113B
| $139K | ﹤0.01% |
5,400
-1,228,659
| -100% | -$31.6M |
|
1011
Capitol Federal Financial
CFFN
$843M
| $138K | ﹤0.01% |
16,719
+16,664
| +30,298% | +$138K |
|
1012
Fusion Fuel Green
HTOO
$7.37M
| $138K | ﹤0.01% |
795
+398
| +100% | +$69.1K |
|
|
MESO
1013
Mesoblast
MESO
$1.91B
| $138K | ﹤0.01% |
27,178
+19,616
| +259% | +$99.6K |
|
1014
scPharmaceuticals
SCPH
$302M
| $138K | ﹤0.01% |
21,219
-38,696
| -65% | -$252K |
|
|
HIVE
1015
HIVE Digital Technologies
HIVE
$861M
| $136K | ﹤0.01% |
+36,270
| New | +$136K |
|
1016
Pembina Pipeline
PBA
$22.8B
| $136K | ﹤0.01% |
4,507
+3,787
| +526% | +$114K |
|
1017
iShares Preferred and Income Securities ETF
PFF
$14.7B
| $136K | ﹤0.01% |
+4,306
| New | +$136K |
|
1018
Sangamo Therapeutics
SGMO
$152M
| $136K | ﹤0.01% |
27,782
+15,788
| +132% | +$77.3K |
|
|
SIXG
1019
Defiance Connective Technologies ETF
SIXG
$653M
| $136K | ﹤0.01% |
4,775
-1,300
| -21% | -$37K |
|
|
ATHX
1020
DELISTED
Athersys, Inc. Common Stock
ATHX
| $136K | ﹤0.01% |
74,019
+69,311
| +1,472% | +$127K |
|
1021
Honda
HMC
$43.8B
| $135K | ﹤0.01% |
+6,262
| New | +$135K |
|
|
SA
1022
Seabridge Gold
SA
$1.92B
| $135K | ﹤0.01% |
11,380
-3,612
| -24% | -$42.8K |
|
1023
Vertiv
VRT
$51.8B
| $135K | ﹤0.01% |
13,940
+4,348
| +45% | +$42.1K |
|
1024
Flex
FLEX
$21.5B
| $134K | ﹤0.01% |
10,674
-202,333
| -95% | -$2.54M |
|
|
GOOD
1025
Gladstone Commercial Corp
GOOD
$608M
| $134K | ﹤0.01% |
8,656
+7,680
| +787% | +$119K |
|