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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.19% |
| 2 | Consumer Discretionary | 0.38% |
| 3 | Technology | 0.35% |
| 4 | Communication Services | 0.24% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1076
CALL
GlobalFoundries
GFS
$24.8B
| $6.53M | 0.01% |
121,100
+5,300
| +5% | +$310K |
|
1077
PUT
Kinder Morgan
KMI
$69.9B
| $6.53M | 0.01% |
360,900
+170,500
| +90% | +$3.07M |
|
|
BNY
1078
CALL
Bank of New York Mellon
BNY
$112B
| $6.5M | 0.01% |
142,900
+20,900
| +17% | +$896K |
|
|
VMW
1079
PUT
DELISTED
VMware, Inc
VMW
| $6.49M | 0.01% |
52,900
-4,800
| -8% | -$553K |
|
1080
CALL
PENN Entertainment
PENN
$2.29B
| $6.49M | 0.01% |
218,400
-1,500
| -0.7% | -$48.7K |
|
1081
PUT
Intercontinental Exchange
ICE
$90.5B
| $6.47M | 0.01% |
63,100
-76,500
| -55% | -$7.62M |
|
1082
CALL
FT Vest Gold Strategy Target Income ETF
IGLD
$603M
| $6.44M | 0.01% |
105,800
-23,600
| -18% | -$438K |
|
1083
CALL
AB InBev
BUD
$158B
| $6.43M | 0.01% |
107,100
-25,400
| -19% | -$1.36M |
|
1084
CALL
Nasdaq
NDAQ
$54.2B
| $6.42M | 0.01% |
104,600
+33,400
| +47% | +$2.08M |
|
1085
PUT
Kimberly-Clark
KMB
$34.9B
| $6.39M | 0.01% |
47,100
+1,500
| +3% | +$191K |
|
1086
PUT
Enterprise Products Partners
EPD
$84.1B
| $6.37M | 0.01% |
264,300
-92,300
| -26% | -$2.27M |
|
1087
CALL
InMode
INMD
$858M
| $6.37M | 0.01% |
178,400
+2,700
| +2% | +$93.9K |
|
1088
CALL
Quest Diagnostics
DGX
$26.2B
| $6.37M | 0.01% |
40,700
+34,700
| +578% | +$4.99M |
|
1089
CALL
Green Plains
GPRE
$1.08B
| $6.35M | 0.01% |
208,100
+63,700
| +44% | +$1.96M |
|
1090
PUT
Zoetis
ZTS
$31.3B
| $6.34M | 0.01% |
43,300
+5,700
| +15% | +$843K |
|
1091
CALL
Sun Life Financial
SLF
$45.1B
| $6.34M | 0.01% |
136,500
-178,900
| -57% | -$7.92M |
|
1092
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$738M
| $6.33M | 0.01% |
165,200
+42,500
| +35% | +$1.4M |
|
1093
PUT
Canadian Pacific Kansas City
CP
$80.5B
| $6.31M | 0.01% |
84,600
-23,100
| -21% | -$1.74M |
|
1094
CALL
TG Therapeutics
TGTX
$8.57B
| $6.27M | 0.01% |
530,300
+37,900
| +8% | +$275K |
|
1095
CALL
Repligen
RGEN
$9.46B
| $6.26M | 0.01% |
37,000
+31,700
| +598% | +$5.75M |
|
1096
PUT
TE Connectivity
TEL
$60.4B
| $6.26M | 0.01% |
54,500
-1,100
| -2% | -$131K |
|
1097
PUT
Invitation Homes
INVH
$16.9B
| $6.25M | 0.01% |
211,000
-75,100
| -26% | -$2.38M |
|
1098
PUT
Marathon Digital Holdings
MARA
$4.37B
| $6.25M | 0.01% |
1,826,700
+815,600
| +81% | +$6.85M |
|
1099
CALL
Qorvo
QRVO
$9.07B
| $6.21M | 0.01% |
68,500
+9,900
| +17% | +$894K |
|
1100
KLA
KLAC
$242B
| $6.2M | 0.01% |
164,400
+122,360
| +291% | +$4.26M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,363 increased, 4,368 reduced and 1,941 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,941 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.