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 |
iShares Russell 2000 ETF
IWM
|
+$58.5M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$56.5M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$44.1M |
| 4 |
Apple
AAPL
|
+$20.3M |
| 5 |
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
|
+$12.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$109M |
| 2 |
Meta Platforms (Facebook)
META
|
+$62.3M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$36.2M |
| 4 |
Goldman Sachs
GS
|
+$27.1M |
| 5 |
Boeing
BA
|
+$24.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 0.49% |
| 2 | Consumer Discretionary | 0.48% |
| 3 | Technology | 0.4% |
| 4 | Financials | 0.25% |
| 5 | Industrials | 0.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
576
CALL
Freeport-McMoran
FCX
$91.3B
| $5M | 0.01% |
4,855
+3,407
| +235% | +$39.7K |
|
577
PUT
Becton Dickinson
BDX
$42.1B
| $5M | 0.01% |
228
+87
| +62% | +$20.2K |
|
|
TYNS
578
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $4.97M | 0.01% |
1,435
-63
| -4% | -$1.81K |
|
579
Mastercard
MA
$469B
| $4.97M | 0.01% |
26,346
+5,676
| +27% | +$1.13M |
|
580
PUT
Itaú Unibanco
ITUB
$92B
| $4.96M | 0.01% |
5,496
+598
| +12% | +$3.84K |
|
581
CALL
Vale
VALE
$63.1B
| $4.95M | 0.01% |
3,756
+2,747
| +272% | +$39.3K |
|
582
PUT
Franco-Nevada
FNV
$41.3B
| $4.94M | 0.01% |
704
-273
| -28% | -$18.2K |
|
583
CALL
Akamai
AKAM
$17.1B
| $4.93M | 0.01% |
808
-148
| -15% | -$9.84K |
|
584
PUT
HCA Healthcare
HCA
$83.5B
| $4.92M | 0.01% |
395
+172
| +77% | +$23.1K |
|
585
CALL
Johnson Controls International
JCI
$87.4B
| $4.92M | 0.01% |
1,658
+570
| +52% | +$18.8K |
|
586
PUT
Cognizant
CTSH
$20.3B
| $4.91M | 0.01% |
774
+274
| +55% | +$19.1K |
|
587
PUT
PG&E
PCG
$38.6B
| $4.91M | 0.01% |
2,067
-238
| -10% | -$8.52K |
|
588
CALL
Check Point Software Technologies
CHKP
$13.1B
| $4.9M | 0.01% |
477
+312
| +189% | +$34.2K |
|
589
PUT
Truist Financial
TFC
$62.5B
| $4.89M | 0.01% |
1,129
+690
| +157% | +$33.1K |
|
590
PUT
Credit Acceptance
CACC
$6.2B
| $4.89M | 0.01% |
128
+39
| +44% | +$15.7K |
|
591
eBay
EBAY
$48.5B
| $4.87M | 0.01% |
+173,626
| New | +$5.11M |
|
592
CALL
Bausch Health
BHC
$1.66B
| $4.86M | 0.01% |
2,633
-1,208
| -31% | -$28.7K |
|
593
PUT
New Oriental
EDU
$7.85B
| $4.85M | 0.01% |
885
+78
| +10% | +$4.52K |
|
|
JWN
594
PUT
DELISTED
Nordstrom
JWN
| $4.84M | 0.01% |
1,038
+397
| +62% | +$22.4K |
|
595
ExxonMobil
XOM
$650B
| $4.84M | 0.01% |
+70,952
| New | +$5.57M |
|
596
PUT
Wabtec
WAB
$50.3B
| $4.81M | 0.01% |
685
+471
| +220% | +$41.1K |
|
597
PUT
Cummins
CMI
$91.8B
| $4.81M | 0.01% |
360
-34
| -9% | -$4.8K |
|
598
CALL
Stanley Black & Decker
SWK
$13.6B
| $4.8M | 0.01% |
401
+146
| +57% | +$18.2K |
|
599
PUT
ProShares Ultra S&P500
SSO
$7.82B
| $4.79M | 0.01% |
5,096
-864
| -14% | -$11.8K |
|
600
PUT
Nasdaq
NDAQ
$51.1B
| $4.77M | 0.01% |
1,755
+1,677
| +2,150% | +$47.8K |
|
Similar funds
Simplex Trading's Q4 2018 Portfolio in Review
As of Q4 2018, Simplex Trading held 8,576 positions worth $34.1B, up 9.5% from $31.1B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q4 2018 filing shows 1,199 new, 2,701 increased, 2,877 reduced and 1,573 closed positions. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 163,699 shares worth $40.9M. The largest sale was Amazon, an estimated $109M.
By sector, the portfolio is most concentrated in Communication Services at 0.49% of assets, down from 0.89% a quarter earlier, followed by Consumer Discretionary and Technology.
- Simplex Trading's largest Q4 2018 buy was State Street SPDR S&P 500 ETF Trust: 163,699 shares worth $40.9M.
- Simplex Trading added most to iShares Russell 2000 ETF in Q4 2018, an estimated $58.5M increase.
- Simplex Trading's biggest Q4 2018 reduction was Amazon, cutting an estimated $109M.
- Simplex Trading fully exited Meta Platforms (Facebook) in Q4 2018, selling an estimated $62.3M.
- Simplex Trading's ten largest holdings make up 43% of its $34.1B portfolio in Q4 2018.
- Simplex Trading opened 1,199 new positions and closed 1,573 in Q4 2018.
- Simplex Trading's portfolio value rose 9.5% quarter-over-quarter to $34.1B.
Based on Simplex Trading's 13F filing for Q4 2018, filed 16 Jan 2019.