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 | |
|---|---|---|---|---|---|---|
|
APOL
776
DELISTED
Apollo Education Group Inc Class A
APOL
| $239K | 0.02% |
29,172
+12,339
| +73% | +$98.1K |
|
777
Avis
CAR
$5.79B
| $238K | 0.02% |
8,715
-7,175
| -45% | -$196K |
|
778
CALL
Western Digital
WDC
$193B
| $238K | 0.02% |
1,250
+465
| +59% | +$16.6K |
|
|
SPLK
779
CALL
DELISTED
Splunk Inc
SPLK
| $238K | 0.02% |
579
+357
| +161% | +$16.1K |
|
|
RPTP
780
DELISTED
RAPTOR PHARMACEUTICAL CORP COM STK (DE)
RPTP
| $238K | 0.02% |
51,859
+32,385
| +166% | +$130K |
|
|
B
781
PUT
Barrick Mining
B
$62.1B
| $237K | 0.02% |
1,162
+859
| +283% | +$10K |
|
782
Brookdale Senior Living
BKD
$3.5B
| $236K | 0.02% |
14,894
-58,128
| -80% | -$887K |
|
783
Forestar Group
FOR
$1.37B
| $236K | 0.02% |
+18,155
| New | +$183K |
|
|
HIMX
784
Himax Technologies
HIMX
$2.37B
| $236K | 0.02% |
+21,039
| New | +$185K |
|
785
PUT
LyondellBasell Industries
LYB
$20.5B
| $236K | 0.02% |
811
+400
| +97% | +$32.1K |
|
786
PUT
F5
FFIV
$22.3B
| $235K | 0.02% |
117
-136
| -54% | -$13K |
|
787
Progress Software
PRGS
$1.57B
| $235K | 0.02% |
+9,746
| New | +$239K |
|
788
Welltower
WELL
$175B
| $235K | 0.02% |
+3,401
| New | +$219K |
|
789
United Parks & Resorts
PRKS
$2.06B
| $235K | 0.02% |
11,177
+6,025
| +117% | +$113K |
|
790
CALL
Emerson Electric
EMR
$80.8B
| $233K | 0.02% |
1,102
+596
| +118% | +$28.7K |
|
791
PUT
Merck
MRK
$321B
| $233K | 0.02% |
1,524
-64
| -4% | -$3.13K |
|
792
PUT
Stratasys
SSYS
$707M
| $232K | 0.02% |
114
-99
| -46% | -$2.02K |
|
|
FIG
793
DELISTED
Fortress Investment Group Llc
FIG
| $232K | 0.02% |
48,693
-13,857
| -22% | -$62.3K |
|
|
SPLS
794
DELISTED
Staples Inc
SPLS
| $232K | 0.02% |
21,051
-45,938
| -69% | -$432K |
|
795
PUT
ATI
ATI
$26.8B
| $231K | 0.02% |
336
+57
| +20% | +$694 |
|
796
Eagle Materials
EXP
$6.2B
| $231K | 0.02% |
3,306
+3,189
| +2,726% | +$186K |
|
|
DBD
797
DELISTED
Diebold Nixdorf Incorporated
DBD
| $231K | 0.02% |
+7,999
| New | +$209K |
|
|
FIT
798
CALL
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $231K | 0.02% |
1,581
-710
| -31% | -$11.3K |
|
|
CPPL
799
DELISTED
Columbia Pipeline Partners LP
CPPL
| $231K | 0.02% |
15,883
+11,445
| +258% | +$176K |
|
800
iShares Russell 1000 Growth ETF
IWF
$123B
| $230K | 0.02% |
+9,248
| New | +$219K |
|
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.