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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
876
PUT
KeyCorp
KEY
$24.4B
| $15.2M | 0.01% |
960,900
+674,000
| +235% | +$9.74M |
|
877
PUT
Southwest Airlines
LUV
$21.9B
| $15.2M | 0.01% |
519,400
-371,300
| -42% | -$11.5M |
|
878
PUT
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.3M
| $15.1M | 0.01% |
719,700
+142,200
| +25% | +$13.1M |
|
879
CALL
Tapestry
TPR
$28.1B
| $15.1M | 0.01% |
318,100
-176,000
| -36% | -$7.55M |
|
880
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$246M
| $15.1M | 0.01% |
293,500
-70,100
| -19% | -$3.03M |
|
881
PUT
Hewlett Packard
HPE
$63.1B
| $15M | 0.01% |
846,400
+760,400
| +884% | +$12.3M |
|
|
SCIU
882
PUT
DELISTED
Global X Scientific Beta US ETF
SCIU
| $15M | 0.01% |
507,800
+56,900
| +13% | +$1.68M |
|
883
CALL
PACCAR
PCAR
$68.8B
| $15M | 0.01% |
121,000
+16,600
| +16% | +$1.78M |
|
884
CALL
HubSpot
HUBS
$9.73B
| $15M | 0.01% |
23,900
-29,800
| -55% | -$17.9M |
|
885
PUT
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $14.9M | 0.01% |
73,700
-29,900
| -29% | -$1.87M |
|
886
PUT
ProShares Ultra S&P500
SSO
$7.82B
| $14.8M | 0.01% |
353,000
-6,600
| -2% | -$233K |
|
887
CALL
MGM Resorts International
MGM
$11.5B
| $14.8M | 0.01% |
313,700
-112,700
| -26% | -$4.93M |
|
888
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $14.8M | 0.01% |
614,600
+303,400
| +97% | +$6.99M |
|
889
PUT
Sunrun
RUN
$2.48B
| $14.8M | 0.01% |
1,121,100
+328,500
| +41% | +$4.52M |
|
890
PUT
Sarepta Therapeutics
SRPT
$1.68B
| $14.8M | 0.01% |
114,000
-187,200
| -62% | -$22.9M |
|
891
Dell
DELL
$284B
| $14.7M | 0.01% |
+129,137
| New | +$12M |
|
892
PUT
Futu Holdings
FUTU
$13.9B
| $14.7M | 0.01% |
271,700
-197,800
| -42% | -$10.2M |
|
893
CALL
Yum! Brands
YUM
$40.6B
| $14.6M | 0.01% |
105,600
+57,300
| +119% | +$7.65M |
|
894
PUT
Dominion Energy
D
$62.8B
| $14.6M | 0.01% |
296,600
-43,400
| -13% | -$2.03M |
|
895
PUT
Vanguard Consumer Discretionary ETF
VCR
$5.81B
| $14.6M | 0.01% |
29,200
-32,000
| -52% | -$9.76M |
|
896
CALL
XP
XP
$8.7B
| $14.6M | 0.01% |
568,200
+397,300
| +232% | +$9.96M |
|
897
PUT
Boston Properties
BXP
$10.8B
| $14.5M | 0.01% |
222,400
+23,000
| +12% | +$1.52M |
|
898
CALL
Enterprise Products Partners
EPD
$83.9B
| $14.5M | 0.01% |
496,300
-176,300
| -26% | -$4.84M |
|
899
Direxion Daily Financial Bull 3x ETF
FAS
$2.35B
| $14.5M | 0.01% |
128,864
+98,356
| +322% | +$9.23M |
|
900
CALL
Intercontinental Exchange
ICE
$81B
| $14.5M | 0.01% |
105,200
-63,500
| -38% | -$8.43M |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.