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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
901
CALL
AGNC Investment
AGNC
$12.3B
| $8.71M | 0.01% |
665,000
+464,500
| +232% | +$6.49M |
|
902
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$246M
| $8.68M | 0.01% |
145,300
-16,500
| -10% | -$809K |
|
903
PUT
Bio-Rad Laboratories Class A
BIO
$8.47B
| $8.67M | 0.01% |
15,400
-700
| -4% | -$422K |
|
904
CALL
Coherent
COHR
$61.3B
| $8.67M | 0.01% |
119,600
+89,600
| +299% | +$6.1M |
|
905
PUT
Builders FirstSource
BLDR
$7.59B
| $8.67M | 0.01% |
134,300
+30,500
| +29% | +$2.21M |
|
906
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$707M
| $8.66M | 0.01% |
210,100
+155,000
| +281% | +$6.2M |
|
907
CALL
Fastly Inc
FSLY
$3.04B
| $8.64M | 0.01% |
497,400
+311,200
| +167% | +$7.27M |
|
908
CALL
Scorpio Tankers
STNG
$3.95B
| $8.64M | 0.01% |
404,000
+318,300
| +371% | +$5.09M |
|
909
CALL
iShares Gold Trust
IAU
$62.9B
| $8.63M | 0.01% |
234,200
+159,300
| +213% | +$5.69M |
|
910
CALL
Hasbro
HAS
$12.4B
| $8.61M | 0.01% |
105,100
+78,600
| +297% | +$7.37M |
|
911
CALL
Cognizant
CTSH
$20.3B
| $8.6M | 0.01% |
95,900
-2,900
| -3% | -$255K |
|
912
CALL
Dynatrace
DT
$11.8B
| $8.59M | 0.01% |
182,400
+117,700
| +182% | +$5.54M |
|
913
PUT
Paycom
PAYC
$6.47B
| $8.55M | 0.01% |
24,700
+2,900
| +13% | +$973K |
|
914
CALL
AngloGold Ashanti
AU
$39.7B
| $8.55M | 0.01% |
361,000
+139,400
| +63% | +$3.03M |
|
|
TYNS
915
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $8.54M | 0.01% |
73,400
-98,900
| -57% | -$11.5M |
|
916
CALL
ALPS REIT Dividend Dogs ETF
RDOG
$11.4M
| $8.53M | 0.01% |
222,600
-63,300
| -22% | -$3.15M |
|
917
PUT
Charles River Laboratories
CRL
$11B
| $8.52M | 0.01% |
30,000
+24,100
| +408% | +$7.43M |
|
918
CALL
Workday
WDAY
$31.6B
| $8.5M | 0.01% |
35,500
-40,300
| -53% | -$9.6M |
|
|
919
CALL
Charles River Laboratories
CRL
$11B
| $8.49M | 0.01% |
29,900
+20,700
| +225% | +$6.38M |
|
920
PUT
Canadian Natural Resources
CNQ
$98B
| $8.41M | 0.01% |
277,099
+62,893
| +29% | +$1.68M |
|
921
PUT
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $8.41M | 0.01% |
109,300
+34,200
| +46% | +$2.76M |
|
|
CTXS
922
PUT
DELISTED
Citrix Systems Inc
CTXS
| $8.4M | 0.01% |
83,300
-61,900
| -43% | -$6.25M |
|
923
CALL
Atlassian
TEAM
$20.3B
| $8.4M | 0.01% |
28,600
-19,300
| -40% | -$5.77M |
|
924
PUT
Norfolk Southern
NSC
$78.3B
| $8.38M | 0.01% |
29,400
+10,300
| +54% | +$2.84M |
|
925
PUT
Monolithic Power Systems
MPWR
$68.6B
| $8.35M | 0.01% |
17,200
+16,500
| +2,357% | +$7.19M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.