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 | Miscellaneous | 97.72% |
| 2 | Technology | 0.67% |
| 3 | Consumer Discretionary | 0.38% |
| 4 | Industrials | 0.24% |
| 5 | Healthcare | 0.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
CALL
Teradata
TDC
$2.61B
| $5.12M | ﹤0.01% |
103,800
+3,000
| +3% | +$138K |
|
|
CYBR
1227
PUT
DELISTED
CyberArk
CYBR
| $5.11M | ﹤0.01% |
30,300
-24,000
| -44% | -$3.64M |
|
1228
CALL
Alnylam Pharmaceuticals
ALNY
$35.6B
| $5.11M | ﹤0.01% |
31,300
-5,900
| -16% | -$899K |
|
1229
Okta
OKTA
$29.8B
| $5.11M | ﹤0.01% |
33,823
-1,765
| -5% | -$316K |
|
1230
Lennar Class A
LEN
$20.1B
| $5.1M | ﹤0.01% |
+64,953
| New | +$5.85M |
|
1231
CALL
Air Products & Chemicals
APD
$67.1B
| $5.1M | ﹤0.01% |
20,400
-13,400
| -40% | -$3.44M |
|
1232
CALL
nCino
NCNO
$2.44B
| $5.08M | ﹤0.01% |
124,100
+102,400
| +472% | +$4.69M |
|
1233
PUT
Unilever
UL
$138B
| $5.08M | ﹤0.01% |
99,200
+43,289
| +77% | +$2.41M |
|
|
FSR
1234
PUT
DELISTED
Fisker Inc.
FSR
| $5.08M | ﹤0.01% |
393,800
-4,500
| -1% | -$56.4K |
|
|
BGFV
1235
PUT
DELISTED
Big 5 Sporting Goods
BGFV
| $5.07M | ﹤0.01% |
295,600
+155,000
| +110% | +$2.76M |
|
1236
PUT
Renaissance International IPO ETF
IPOS
$11.6M
| $5.07M | ﹤0.01% |
+115,000
| New | +$2.49M |
|
1237
PUT
DaVita
DVA
$11.7B
| $5.06M | ﹤0.01% |
44,700
+5,600
| +14% | +$629K |
|
1238
CALL
Generac Holdings
GNRC
$11.1B
| $5.05M | ﹤0.01% |
17,000
+3,400
| +25% | +$1.02M |
|
1239
CALL
Autoliv
ALV
$9.17B
| $5.05M | ﹤0.01% |
66,100
+62,600
| +1,789% | +$5.76M |
|
1240
PUT
CVR Partners
UAN
$1.38B
| $5.04M | ﹤0.01% |
36,500
+32,500
| +813% | +$3.46M |
|
1241
CALL
Petco
WOOF
$772M
| $5.03M | ﹤0.01% |
257,000
+211,400
| +464% | +$3.95M |
|
|
MIME
1242
CALL
DELISTED
Mimecast Limited
MIME
| $5.03M | ﹤0.01% |
63,200
-7,600
| -11% | -$604K |
|
1243
CALL
Sonos
SONO
$1.82B
| $5.01M | ﹤0.01% |
177,400
+67,700
| +62% | +$1.8M |
|
|
TE
1244
CALL
T1 Energy
TE
$1.35B
| $5M | ﹤0.01% |
408,300
+247,800
| +154% | +$2.37M |
|
1245
PUT
Tradeweb Markets
TW
$22.4B
| $5M | ﹤0.01% |
56,900
+55,100
| +3,061% | +$4.78M |
|
1246
PUT
GoDaddy
GDDY
$12.8B
| $5M | ﹤0.01% |
59,700
+40,000
| +203% | +$3.16M |
|
|
MNDT
1247
CALL
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $4.97M | ﹤0.01% |
222,700
+129,100
| +138% | +$2.39M |
|
|
PPLC
1248
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $4.96M | ﹤0.01% |
478,600
+339,100
| +243% | +$3.52M |
|
1249
PUT
Coupang
CPNG
$27.5B
| $4.93M | ﹤0.01% |
279,000
-37,000
| -12% | -$791K |
|
1250
CALL
Synopsys
SNPS
$75.5B
| $4.93M | ﹤0.01% |
14,800
+11,400
| +335% | +$3.56M |
|
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's Q1 2022 filing shows 1,600 new, 4,440 increased, 4,085 reduced and 1,638 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M. The largest sale was State Street Financial Select Sector SPDR ETF, an estimated $42.8M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 1,600 new positions and closed 1,638 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.