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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
951
CALL
Williams Companies
WMB
$90.5B
| $7.27M | 0.01% |
253,900
-52,000
| -17% | -$1.69M |
|
952
CALL
CSX Corp
CSX
$98.6B
| $7.26M | 0.01% |
272,700
+63,500
| +30% | +$1.97M |
|
953
CALL
DexCom
DXCM
$27.6B
| $7.26M | 0.01% |
90,200
-98,200
| -52% | -$8.32M |
|
|
MPT
954
CALL
Medical Properties Trust
MPT
$2.89B
| $7.26M | 0.01% |
612,500
+27,800
| +5% | +$421K |
|
955
CALL
MPLX
MPLX
$59.5B
| $7.26M | 0.01% |
241,900
+178,800
| +283% | +$5.62M |
|
956
PUT
First Citizens BancShares
FCNCA
$24.6B
| $7.26M | 0.01% |
9,100
+8,700
| +2,175% | +$6.8M |
|
957
CALL
Keurig Dr Pepper
KDP
$40.4B
| $7.25M | 0.01% |
202,400
+84,500
| +72% | +$3.2M |
|
|
LAC
958
PUT
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $7.24M | 0.01% |
275,900
+46,600
| +20% | +$1.24M |
|
|
FRC
959
PUT
DELISTED
First Republic Bank
FRC
| $7.22M | 0.01% |
55,300
+41,200
| +292% | +$6.33M |
|
960
PUT
Sysco
SYY
$39.7B
| $7.21M | 0.01% |
102,000
-46,500
| -31% | -$3.87M |
|
961
CALL
CRISPR Therapeutics
CRSP
$4.58B
| $7.21M | 0.01% |
110,300
-16,300
| -13% | -$1.18M |
|
|
FL
962
PUT
DELISTED
Foot Locker
FL
| $7.19M | 0.01% |
231,100
+26,600
| +13% | +$849K |
|
963
CALL
Yum China
YUMC
$14.9B
| $7.19M | 0.01% |
151,900
-10,900
| -7% | -$523K |
|
964
PUT
Canadian Pacific Kansas City
CP
$82B
| $7.18M | 0.01% |
107,700
+25,600
| +31% | +$1.93M |
|
|
DCP
965
PUT
DELISTED
DCP Midstream, LP
DCP
| $7.18M | 0.01% |
191,200
+157,100
| +461% | +$5.5M |
|
966
CF Industries
CF
$19.2B
| $7.18M | 0.01% |
74,561
+141
| +0.2% | +$13.8K |
|
967
S&P Global
SPGI
$126B
| $7.18M | 0.01% |
+23,501
| New | +$8.41M |
|
968
PUT
ArcelorMittal
MT
$50.4B
| $7.16M | 0.01% |
359,800
-230,100
| -39% | -$5.27M |
|
969
PUT
Quanta Services
PWR
$93.9B
| $7.15M | 0.01% |
56,100
+17,500
| +45% | +$2.39M |
|
970
CALL
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.5M
| $7.13M | 0.01% |
475,100
-66,200
| -12% | -$6.14M |
|
971
PUT
AGNC Investment
AGNC
$12.3B
| $7.12M | 0.01% |
845,900
+587,100
| +227% | +$6.89M |
|
972
CALL
Teva Pharmaceuticals
TEVA
$35.9B
| $7.12M | 0.01% |
882,300
-425,000
| -33% | -$3.76M |
|
973
PUT
Dillards
DDS
$8.87B
| $7.12M | 0.01% |
26,100
+9,900
| +61% | +$2.62M |
|
974
NIO
NIO
$11.3B
| $7.11M | 0.01% |
450,962
-268,407
| -37% | -$5.31M |
|
975
CALL
DigitalOcean
DOCN
$14.4B
| $7.11M | 0.01% |
196,500
-24,600
| -11% | -$1.03M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.