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 | |
|---|---|---|---|---|---|---|
|
NTRI
1126
DELISTED
NutriSystem, Inc.
NTRI
| $136K | 0.01% |
+6,560
| New | +$130K |
|
1127
Boston Scientific
BSX
$64.8B
| $135K | 0.01% |
7,192
+2,646
| +58% | +$46.5K |
|
1128
PUT
JD.com
JD
$40.6B
| $135K | 0.01% |
1,077
+457
| +74% | +$12K |
|
1129
Keurig Dr Pepper
KDP
$40.4B
| $135K | 0.01% |
1,511
+212
| +16% | +$19.3K |
|
1130
PUT
Seagate
STX
$207B
| $135K | 0.01% |
663
+346
| +109% | +$11.2K |
|
|
SAVE
1131
DELISTED
Spirit Airlines, Inc.
SAVE
| $135K | 0.01% |
2,816
+229
| +9% | +$10.2K |
|
|
PACW
1132
DELISTED
PacWest Bancorp
PACW
| $135K | 0.01% |
3,652
+3,061
| +518% | +$108K |
|
|
CVRR
1133
DELISTED
CVR Refining, LP
CVRR
| $135K | 0.01% |
11,258
+2,043
| +22% | +$29K |
|
1134
PUT
Intel
INTC
$504B
| $134K | 0.01% |
1,975
-879
| -31% | -$27K |
|
1135
CALL
National Health Investors
NHI
$3.88B
| $134K | 0.01% |
384
+130
| +51% | +$8.03K |
|
1136
Vicor
VICR
$10.5B
| $134K | 0.01% |
12,859
-6,755
| -34% | -$58.1K |
|
1137
Weibo
WB
$1.92B
| $134K | 0.01% |
+7,468
| New | +$120K |
|
|
ARRS
1138
DELISTED
ARRIS International plc Ordinary Shares
ARRS
| $134K | 0.01% |
5,852
+3,715
| +174% | +$91K |
|
|
JST
1139
DELISTED
JINPAN INT'L LTD(COMMON)
JST
| $134K | 0.01% |
+22,877
| New | +$117K |
|
1140
CALL
Hewlett Packard
HPE
$63.1B
| $133K | 0.01% |
1,414
-265
| -16% | -$2.22K |
|
1141
PUT
Ferrari
RACE
$63.2B
| $133K | 0.01% |
755
+537
| +246% | +$21.7K |
|
1142
CALL
Simon Property Group
SPG
$73B
| $133K | 0.01% |
342
+66
| +24% | +$12.7K |
|
1143
CALL
Waste Management
WM
$95.3B
| $133K | 0.01% |
304
+165
| +119% | +$9.11K |
|
|
KANG
1144
PUT
DELISTED
iKang Healthcare Group, Inc.
KANG
| $133K | 0.01% |
1,140
+920
| +418% | +$19.2K |
|
|
FINL
1145
DELISTED
Finish Line
FINL
| $133K | 0.01% |
6,342
+1,276
| +25% | +$23.6K |
|
|
TERP
1146
PUT
DELISTED
TerraForm Power, Inc
TERP
| $133K | 0.01% |
456
+6
| +1% | +$56 |
|
1147
Cheesecake Factory
CAKE
$4.2B
| $132K | 0.01% |
2,497
+2,074
| +490% | +$103K |
|
1148
CALL
CF Industries
CF
$19.5B
| $132K | 0.01% |
1,274
-117
| -8% | -$3.82K |
|
1149
PUT
Clean Energy Fuels
CLNE
$460M
| $132K | 0.01% |
594
+451
| +315% | +$1.27K |
|
1150
PUT
Lockheed Martin
LMT
$131B
| $132K | 0.01% |
486
+168
| +53% | +$36.1K |
|
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.