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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
201
Emerson Electric
EMR
$78.3B
| $1.12M | 0.09% |
20,655
+13,345
| +183% | +$644K |
|
|
ETFC
202
DELISTED
E*Trade Financial Corporation
ETFC
| $1.1M | 0.09% |
+44,813
| New | +$1.09M |
|
203
ServiceNow
NOW
$99.9B
| $1.09M | 0.09% |
+89,550
| New | +$1.13M |
|
204
Elevance Health
ELV
$85.1B
| $1.09M | 0.09% |
7,876
-4,231
| -35% | -$565K |
|
205
CALL
Mastercard
MA
$473B
| $1.09M | 0.09% |
2,286
+1,021
| +81% | +$90.3K |
|
|
ACAS
206
DELISTED
American Capital Ltd
ACAS
| $1.09M | 0.09% |
71,771
-4,235
| -6% | -$59K |
|
207
PUT
Williams Companies
WMB
$91.4B
| $1.09M | 0.09% |
1,382
+399
| +41% | +$6.86K |
|
208
Comcast
CMCSA
$85.2B
| $1.08M | 0.09% |
35,366
-41,362
| -54% | -$1.19M |
|
209
Rio Tinto
RIO
$150B
| $1.08M | 0.09% |
38,182
+27,616
| +261% | +$735K |
|
210
RH
RH
$3.29B
| $1.07M | 0.09% |
25,606
+25,076
| +4,731% | +$1.28M |
|
211
CALL
Adobe
ADBE
$87.9B
| $1.07M | 0.09% |
1,165
+866
| +290% | +$75.1K |
|
212
CALL
Skyworks Solutions
SWKS
$9.45B
| $1.06M | 0.08% |
1,840
-185
| -9% | -$12.5K |
|
|
RSX
213
DELISTED
VanEck Russia ETF
RSX
| $1.06M | 0.08% |
64,633
-117,908
| -65% | -$1.71M |
|
214
Canadian Pacific Kansas City
CP
$81.3B
| $1.05M | 0.08% |
39,450
+19,755
| +100% | +$481K |
|
215
PUT
Halliburton
HAL
$27.9B
| $1.05M | 0.08% |
1,658
-106
| -6% | -$3.46K |
|
216
Autodesk
ADSK
$43.2B
| $1.04M | 0.08% |
+17,905
| New | +$934K |
|
|
SNP
217
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $1.04M | 0.08% |
15,907
+12,598
| +381% | +$727K |
|
218
NextEra Energy
NEE
$186B
| $1.03M | 0.08% |
+34,996
| New | +$982K |
|
|
HA
219
DELISTED
Hawaiian Holdings, Inc.
HA
| $1.03M | 0.08% |
+21,953
| New | +$851K |
|
|
SINA
220
DELISTED
Sina Corp
SINA
| $1.03M | 0.08% |
21,858
-23,627
| -52% | -$1.06M |
|
221
Colgate-Palmolive
CL
$73.4B
| $1.03M | 0.08% |
+14,620
| New | +$973K |
|
222
CALL
JPMorgan Chase
JPM
$923B
| $1.03M | 0.08% |
5,671
+2,389
| +73% | +$140K |
|
223
iShares National Muni Bond ETF
MUB
$45.3B
| $1.02M | 0.08% |
+9,154
| New | +$1.02M |
|
224
abrdn Physical Gold Shares ETF
SGOL
$7.08B
| $1.02M | 0.08% |
85,060
+84,810
| +33,924% | +$980K |
|
225
CALL
Caterpillar
CAT
$412B
| $1.02M | 0.08% |
1,908
+865
| +83% | +$58K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.